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Abaqus Release Notes

1. On Windows x86 64 platforms the required Microsoft Visual C libraries and Microsoft Message Passing Interface MPI libraries are both installed On Windows x86 32 platforms the Microsoft Visual C libraries are installed The GUI installer for the Hewlett Packard HP Message Passing Interface library HP MPI cannot run in the client installer To install the HP MPI libraries separately see the instructions in Visual C and MPI Libraries Section 2 4 1 of the Abaqus Installation and Licensing Guide MPI components must be installed to use MPl based parallel job execution in Abaqus Standard to use domain level parallelization in Abaqus Explicit or to run any job in Abaqus CFD regardless of the number of CPUs If your Abaqus users will be running these types of simulations you must have the required MPI components References Abaqus Installation and Licensing Guide e Information to enter during product installation Section 2 4 2 e Client installation for Windows Section 2 4 4 2 1 GENERAL ENHANCEMENTS 2 2 Context bar list navigation in Abaqus CAE Product Abaqus CAE Benefits Up and down buttons on the context bar drop down lists allow you to move quickly to the previous item or next item Description The context bar contains the Module drop down list for moving to different modules within Abaqus CAE As shown in Figure 2 1 new up and down arrows to the left now allow you to move to the
2. Assign Section tool allows you to reuse this information to compute shell thickness and element offset F Auto trim to reference representation _x Figure 4 3 The Auto Select option in the Offset Faces dialog box The Extend Faces operation has two new options available if you use target faces to determine the extension distance You can choose whether Abaqus CAE extends the target faces temporarily to create intersections with the faces that you are extending The Trim to extended underlying target surfaces option is toggled off by default The second enhancement allows you to limit the edges that will be extended when you use target faces Now when you click OK in the dialog box Abaqus CAE highlights only those edges from your selection that would intersect with the target faces and gives you the option to extend these edges instead of your original selection You can accept the new selection extend your original selection edges or all free edges if you selected faces or cancel the procedure This enhancement allows you to use faster selection methods while still extending only the intersecting edges The Blend Faces procedure has been enhanced so that you now select edges for the first and second sides of the blend before the dialog box is displayed 4 5 MODELING Abaqus CAE Usage Part module Tools Geometry Edit Face Offset Extend or Blend References Abaqus CAE User s Manual e Offset faces
3. Crack propagation of a single edge notch simulated using XFEM Section 1 19 1 e Crack propagation in a plate with a hole simulated using XFEM Section 1 19 2 6 3 New RNG k epsilon turbulence model for fluid dynamic analysis Products Abaqus CFD Abaqus CAE Benefits The RNG k model is a two equation model based on renormalization group theory that produces more accurate results than the standard k e model for flow problems where separation and recirculation occur Description The RNG k model is a two equation model based on renormalization group theory that accounts for the effects of small scales of motion in contrast to the standard k e model that bases its turbulent viscosity on a single length scale The RNG k e model attempts to account for the contribution of multiple scales to the dissipation rate The RNG k e model in Abaqus CFD is implemented using wall functions that rely on an advanced normal distance level set function to accurately locate the near wall region in complex geometry As a two equation model the incremental computational cost increase is quite small relative to the Spalart Allmaras model Abaqus CAE Usage Step module Step Create General Flow Turbulence tabbed page k epsilon renormalization group RNG References Abaqus Analysis User s Manual e Incompressible fluid dynamic analysis Section 6 6 2 Abaqus CAE User s Manual e Configuring a flow procedure in Configuring g
4. Release Notes SIMULIA Abaqus Release Notes Legal Notices CAUTION This documentation is intended for qualified users who will exercise sound engineering judgment and expertise in the use of the Abaqus Software The Abaqus Software is inherently complex and the examples and procedures in this documentation are not intended to be exhaustive or to apply to any particular situation Users are cautioned to satisfy themselves as to the accuracy and results of their analyses Dassault Syst mes and its subsidiaries including Dassault Syst mes Simulia Corp shall not be responsible for the accuracy or usefulness of any analysis performed using the Abaqus Software or the procedures examples or explanations in this documentation Dassault Syst mes and its subsidiaries shall not be responsible for the consequences of any errors or omissions that may appear in this documentation The Abaqus Software is available only under license from Dassault Syst mes or its subsidiary and may be used or reproduced only in accordance with the terms of such license This documentation is subject to the terms and conditions of either the software license agreement signed by the parties or absent such an agreement the then current software license agreement to which the documentation relates Abaqus software updates are designated by Version Release and if applicable Maintenance Delivery Releases are software updates that include enhancements and new fu
5. Section 29 6 6 e Contact constraint enforcement methods in Abaqus Standard Section 34 1 2 Abaqus Keywords Reference Manual e GASKET THICKNESS BEHAVIOR e SURFACE BEHAVIOR 11 3 Edge to edge general contact enhancement Product Abaqus Explicit Benefits You can now obtain more efficient and robust edge to edge contact interactions in general contact in Abaqus Explicit Description Edge to edge contact now allows for more local tracking information to be utilized to reduce the extent of global tracking required This change will typically result in better edge to edge contact performance in analyses that include extensive edge to edge contact interactions The new algorithm is active by default for all edge to edge contact interactions defined in a model References Abaqus Analysis User s Manual e Contact controls for general contact in Abaqus Explicit Section 32 4 5 Abaqus Keywords Reference Manual e CONTACT CONTROLS ASSIGNMENT 11 3 MESHING 12 Meshing This chapter discusses features related to meshing your model It provides an overview of the following enhancements e Tetrahedral meshing enhancements Section 12 1 e Mesh stack orientations Section 12 2 12 1 Tetrahedral meshing enhancements Product Abaqus CAE Benefits Tetrahedral meshing algorithms have been improved to provide more accurate meshing for spline faces and virtual combined faces Boundary meshing has also been
6. Section 68 6 7 in the online HTML version of this manual e Extend faces Section 68 6 8 in the online HTML version of this manual e Blend faces Section 68 6 9 in the online HTML version of this manual 4 4 Creating a wire from edge feature Product Abaqus CAE Benefits You can now convert shell or solid part edges into wires Description When you select edges to create a wire from edge feature Abaqus CAE removes the adjoining faces and creates a wire feature to replace all edges of the removed faces In addition Abaqus CAE makes any other changes necessary to retain the validity of the remaining geometry such as converting solids to shells For example if you select two disconnected edges from a solid box the resulting model contains two shell faces and a wire feature that completes the original shape of the box as shown Figure 4 4 Each of the selected edges was associated with two faces so Abaqus CAE removes those faces and converts the solid to a shell The selected edges and all the other edges that are no longer associated with faces make up the new wire feature Figure 4 4 Creating wires from the edges of a solid part 4 6 MODELING Abaqus CAE Usage Part module Shape Wire From Edge Reference Abaqus CAE User s Manual e Adding a wire from edge feature Section 11 23 5 in the online HTML version of this manual 4 5 Adding a mirror feature to a part Product Abaqus CAE Benefits Y
7. une autre faute dans la limite autoris e par la loi en vigueur Elle s applique galement m me si Microsoft connaissait ou devrait conna tre l ventualit d un tel dommage Si votre pays n autorise pas l exclusion ou la limitation de responsabilit pour les dommages indirects accessoires ou de quelque nature que ce soit il se peut que la limitation ou l exclusion ci dessus ne s appliquera pas votre gard EFFET JURIDIQUE Le pr sent contrat d crit certains droits juridiques Vous pourriez avoir d autres droits pr vus par les lois de votre pays Le pr sent contrat ne modifie pas les droits que vous conf rent les lois de votre pays si celles ci ne le permettent pas SIMULIA Worldwide Headquarters SIMULIA European Headquarters United States Australia Austria Benelux Canada China Czech amp Slovak Republics Finland France Germany Greece India Israel Italy Japan Korea Latin America Malaysia New Zealand Poland Russia Belarus amp Ukraine Scandinavia Singapore South Africa Spain amp Portugal Taiwan Thailand Turkey United Kingdom Locations Rising Sun Mills 166 Valley Street Providence RI 02909 2499 Tel 1 401 276 4400 Fax 1 401 276 4408 simulia support 3ds com http www simulia com Stationsplein 8 K 6221 BT Maastricht The Netherlands Tel 31 43 7999 084 Fax 31 43 7999 306 simulia europe info 3ds com Technical Support Centers Fremont CA Tel 1
8. The created XY Data object is saved only for the current Abaqus session Cancel Figure 13 6 Operating on X Y history data when saving In addition you can now change the prefix of the data object name when saving multiple history output X Y data sets The default data object names are XYData 1 XYData 2 etc you can edit the XYData portion of the data object name to specify a new prefix Save XY Data As xi Name prefix NodalDisplacement Figure 13 7 Saving a data object with name NodalDisplacement 1 Abaqus CAE Usage Visualization module Tools XY Data Create ODB history output select output variables Save As select Save Operation 13 10 OUTPUT AND VISUALIZATION References Abaqus CAE User s Manual e Saving an X Y data object Section 46 2 6 e Overview of X Y data operations Section 46 4 4 13 8 Toolbox button for ply stack plot options Product Abaqus CAE Benefits A new button in the Visualization module of Abaqus CAE provides quicker access to ply stack plot options Description The 8 button in the Visualization module toolbox invokes the Ply Stack Plot Options dialog box Abaqus CAE Usage Visualization module Click from the toolbox Reference Abaqus CAE User s Manual e An overview of ply stack plot options Section 52 2 1 in the online HTML version of this manual 13 11 USER SUBROUTINES UTILITIES AND PLUG INS 14 User subroutines
9. 1 9 2 Changing the coordinate system for symmetry boundary conditions Product Abaqus CAE PRESCRIBED CONDITIONS Benefits You can now change the coordinate system in which you apply a symmetry antisymmetry or encastre boundary condition This enhancement provides a finer level of control when defining these types of boundary conditions Description By default the global coordinate system is used when defining any boundary condition For a symmetry antisymmetry encastre boundary condition the Edit Boundary Condition dialog box now includes a button that lets you do either of the following e Select an existing datum coordinate system in the viewport e Select an existing datum coordinate system by name Figure 9 2 shows the new edit button available for the CSYS option Edit Boundary Condition xi Name BC 5 Type Symmetry ntisymmetry Encastre Step Initial Region Picked css Global gt A xSYMM U1 UR2 UR3 0 C SYMM U2 UR1 UR3 0 C Z5YMM U3 UR1 UR2 0 C XASYMM U2 U3 UR1 0 Abaqus Standard only C YASYMM U1 U3 UR2 0 Abaqus Standard only ZASYMM U1 U2 UR3 0 Abaqus Standard only PINNED U1 U2 U3 0 ENCASTRE U1 U2 U3 UR1 UR2 UR3 0 OK Cancel Figure 9 2 Changing the coordinate system for a symmetry boundary condition Abaqus CAE Usage Load module Create Boundary Condition Category Mechanical Ty
10. 7 6 8 6 9 6 10 7 1 8 1 8 2 9 1 9 2 9 3 9 4 9 5 10 1 10 2 11 1 11 2 11 3 12 1 12 2 13 1 13 2 14 15 16 Displaying constraints in the Visualization module Displaying free body nodal forces in symbol plots Enhanced query options for probing the model Controlling plot state and Field Output toolbar synchronization Saving and operating on history output X Y data simultaneously Toolbox button for ply stack plot options User subroutines utilities and plug ins Defining damage initiation criterion via user subroutine UDMGINI Abaqus Scripting Interface Setting the last main file to open on startup in the Abaqus PDE Support for NumPy library for Python in Abaqus Summary of changes Changes in Abaqus elements Changes in Abaqus options Changes in Abaqus user subroutines Changes in Abaqus output variable identifiers Product Index xi CONTENTS 13 3 13 4 13 5 13 6 13 7 13 8 15 1 15 2 16 1 16 2 16 3 16 4 INTRODUCTION TO Abaqus 6 10 EF 1 Introduction to Abaqus 6 10 EF This document introduces features in Abaqus that have been added enhanced or updated since the Abaqus 6 10 release Chapter 1 provides a brief overview of the Abaqus products included in this release Chapters 2 15 provide short descriptions of new Abaqus 6 10 EF features in Abaqus Standard Abaqus Explicit Abaqus CFD and Abaqus CAE categorized by subject e Chapter 2 General enhancements ge
11. Controls dialog box You can assign a mesh stack orientation to solid cells with any element shape except tetrahedral The Element Normal and Element Tangent options previously available only in the Property module are also included in the new Mesh Orientation menu Abaqus CAE Usage Mesh module Mesh Orientation Stack Normal Tangent References Abaqus CAE User s Manual e Assigning shell membrane normal directions Section 12 14 5 in the online HTML version of this manual e Assigning beam truss tangent directions Section 12 14 6 in the online HTML version of this manual e Applying a mesh stack orientation Section 17 17 8 in the online HTML version of this manual 12 3 OUTPUT AND VISUALIZATION 13 Output and visualization This chapter discusses obtaining postprocessing and visualizing results from Abaqus analyses It provides an overview of the following enhancements e Output database size reduction Section 13 1 e Streamlines Section 13 2 e Displaying constraints in the Visualization module Section 13 3 e Displaying free body nodal forces in symbol plots Section 13 4 e Enhanced query options for probing the model Section 13 5 e Controlling plot state and Field Output toolbar synchronization Section 13 6 e Saving and operating on history output X Y data simultaneously Section 13 7 e Toolbox button for ply stack plot options Sectio
12. Explicit that allows you to easily request output on the exterior node and element sets This option is available only for three dimensional models and is particularly useful for visualization of the overall deformation of the model Abaqus CAE Usage Step module Field output request editor or history output request editor MISESONLY and PRESSONLY OUTPUT AND VISUALIZATION References Abaqus Analysis User s Manual e Output to the output database Section 4 1 3 Abaqus CAE User s Manual e Defining output requests Section 14 12 in the online HTML version of this manual Abaqus Keywords Reference Manual e ELEMENT OUTPUT e NODE OUTPUT 13 2 Streamlines Products Abaqus CFD Abaqus CAE Benefits You can now visualize the velocity or vorticity of fluid flow in an Abaqus CFD analysis using streamlines which trace the path tangent to a nodal vector field This enhancement expands the visualization capabilities of Abaqus CAE for fluid structure interaction analyses Description The new Stream toolset enables you to visualize fluid flow data by placing a rake into the flow A rake is a line segment or series of line segments with a number of points specified along its length Abaqus CAE traces streamlines to display the flow passing through each point on the rake Figure 13 1 displays the streamlines that show fluid flow downstream from a twelve pointed stream rake placed at the inflow duct of a manifold You c
13. MPI IS PROVIDED AS IS AND WITHOUT ANY WARRANTY DASSAULT SYST MES ITS SUBSIDIARIES AND HP SPECIFICALLY DISCLAIM ANY AND ALL WARRANTIES EXPRESS OR IMPLIED INCLUDING ANY WARRANTIES OF NON INFRINGEMENT OR OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE IN NO EVENT SHALL DASSAULT SYST MES ITS SUBSIDIARIES OR HP BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL PUNITIVE SPECIAL OR CONSEQUENTIAL DAMAGE INCLUDING WITHOUT LIMITATION DAMAGES FOR LOSS OF BUSINESS PROFITS BUSINESS INTERRUPTION OR LOSS OF BUSINESS INFORMATION ARISING FROM USE OR ATTEMPTED USE OF HP MPI EVEN IF DASSAULT SYST MES ITS SUBSIDIARIES OR HP HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES MS MPI LICENSE TERMS MS MPI is included with this release of Abaqus software MS MPI is an implementation from Microsoft Corporation Microsoft of the Message Passing Interface standard that may be used for parallel execution of Abaqus Standard Abaqus Explicit and Abaqus CFD MS MPI is the property of Microsoft and is not an Abaqus Program Under a license from Microsoft to Dassault Systemes Simulia Corp MS MPI is made available to licensed Abaqus users at no additional charge You are a licensed Abaqus user if you are authorized to use Abaqus software under a software license agreement between Dassault Syst mes or its subsidiary and the business governmental or academic entity with which you are associated If you are a licensed Abaqus user you may obtain
14. Stream Result Field Output Stream Variable tabbed page Reference Abaqus CAE User s Manual e Chapter 73 The Stream toolset 13 3 Displaying constraints in the Visualization module Product Abaqus CAE Benefits Abaqus CAE now lets you view analysis constraints in the Visualization module facilitating the debugging of models with large numbers of constraints 13 3 OUTPUT AND VISUALIZATION Description You can selectively control the display of model constraints using display groups and the ODB Display Options dialog box These controls are useful when debugging models that contain large numbers of constraints By turning the display of some constraints on and off you can more easily examine the results The following types of constraints can be individually selected for display e tie constraints e rigid body constraints e shell to solid couplings e distributing couplings e kinematic couplings You must first add the desired constraints to a display group for them to be visible in the viewport You can create and edit display groups to include or exclude different constraints Figure 13 2 shows an example of a kinematic coupling constraint display and Figure 13 3 shows the new Constraints tab of the ODB Display Options dialog box Figure 13 2 Spider lines representing a kinematic coupling constraint in the viewport 13 4 OUTPUT AND VISUALIZATION 0DE Display Options o xi Sweep Extrude Mirror
15. Usage Mesh module Mesh Element Type References Abaqus Analysis User s Manual e Fluid continuum elements Section 25 2 1 e Fluid element library Section 25 2 2 Abaqus CAE User s Manual e Assigning Abaqus element types Section 17 5 PRESCRIBED CONDITIONS 9 Prescribed conditions This chapter discusses loads boundary conditions and predefined fields It provides an overview of the following enhancements e Three dimensional pressure penetration loading Section 9 1 e Changing the coordinate system for symmetry boundary conditions Section 9 2 e Total force distribution option for pressure loads Section 9 3 e Specifying the source and target regions for temperature mapping Section 9 4 e Explicit dynamics analysis using Abaqus Aqua Section 9 5 9 1 Three dimensional pressure penetration loading Products Abaqus Standard Abaqus CAE Benefits Pressure penetration loading is now available for three dimensional models Description Pressure penetration loading can now be applied to the contact pair surfaces defined by using solid cylindrical solid shell continuum shell membrane and rigid elements in three dimensions It can also be applied to an analytical three dimensional rigid surface when the surface is defined as the master surface of a contact pair Two important enhancements are made for planar and axisymmetric models as well as for three dimensional models
16. abaqus suspend suspends an Abaqus analysis job abaqus terminate terminates an Abaqus analysis job abaqus upgrade upgrades an input file or output database file from previous versions of Abaqus to the current version Changes to documentation e When installing Abaqus if you have installed both the PDF and HTML versions of the documentation you now have the option of choosing the format that the abaqus doc command will open See Abaqus product installation Section 2 1 3 of the Abaqus Installation and Licensing Guide e The PDF version of the Abaqus Keywords Reference Manual now consists of one volume The manual contains the same content as before The volume division was removed to ease searching in the PDF version e Search hit counts in the HTML manuals are now displayed for every level of the table of contents Search hit highlighting has been enhanced such that if you use the table of contents to open a section containing search hits it first opens to the section title rather than to the first hit Then you can use the Next Match INTRODUCTION TO Abaqus 6 10 EF button to jump to the first search result in that section If you are already reading a manual conducting a new search will also reload the current page to the section title 1 3 Changes in interpretation of input data The following change in Abaqus 6 10 EF may impact the analysis of input files from previous releases of Abaqus e The enhanced general contact trackin
17. an Abaqus model new S UDMGINI User subroutine to define the damage initiation criterion for enriched elements 16 4 SUMMARY OF CHANGES 16 4 Changes in Abaqus output variable identifiers This section summarizes the changes and the additions that have been made to output variable identifiers used in Abaqus Whole element variables mod E mod E mod E mod E mod E mod E mod E new S mod S CA The connector relative acceleration previously available only for history output can now be requested for field output CDIP The components of connector plastic motion based damage initiation criterion in all directions previously available only for history output can now be requested for field output CFAILST The all flags for connector failure status previously available only for history output can now be requested for field output CP The connector relative position previously available only for history output can now be requested for field output CUPEQ Equivalent plastic relative motion for a coupled plasticity definition is now available in addition to equivalent plastic relative displacements and rotations in all directions CUPEQC Equivalent plastic relative motion for a coupled plasticity definition is no longer available for field output CV The connector relative velocity previously available only for history output can now be requested for field output CYCLEIN
18. e Pressure penetration loading can now be used with any contact formulation within the contact pair framework e MPI based parallelization of element operations is supported Figure 9 1 shows the pressure penetration between two three dimensional rings started from the bottom side at the outside corner of the contact surfaces Abaqus CAE Usage Interaction module Interaction Create Pressure penetration References Abaqus Analysis User s Manual e Pressure penetration loading Section 33 1 7 Abaqus CAE User s Manual e Defining pressure penetration Section 15 13 13 in the online HTML version of this manual 9 1 PRESCRIBED CONDITIONS PPRESS 3 000e 02 2 750e 02 2 500e 02 2 250e 02 2 000e 02 1 750e 02 1 500e 02 1 250e 02 1 000e 02 7 500e 01 5 000e 01 2 500e 01 0 000e 00 Y a Step pressure_penetration Step 2 X increment 20 Step Time 1 000 Primary Var PPRESS Deformed Var U Deformation Scale Factor 3 000e 01 Figure 9 1 Pressure penetration between two bodies defined using CCL12 elements Abaqus Keywords Reference Manual e PRESSURE PENETRATION Abaqus Example Problems Manual e Pressure penetration analysis of an air duct kiss seal Section 1 1 16 Abaqus Verification Manual e Surface based pressure penetration Section 1 3 42 Abaqus Theory Manual e Pressure penetration loading with surface based contact Section 6 4
19. elements either in the form of distributed or concentrated loads In Abaqus Explicit the gravitational waves formulation is limited to the fifth order Stokes wave References Abaqus Analysis User s Manual e Abaqus Aqua analysis Section 6 11 1 Abaqus Keywords Reference Manual e AQUA e CLOAD e DLOAD e WAVE e WIND CONSTRAINTS 10 Constraints This chapter discusses kinematic constraints It provides an overview of the following enhancements e Automatic shell to solid coupling constraints Section 10 1 e Improvement to coupling definition Section 10 2 10 1 Automatic shell to solid coupling constraints Product Abaqus CAE Benefits Abaqus CAE automatically creates shell to solid coupling constraints between the shell and solid sections within a single part instance Description When the model of a single part contains both shell and solid sections such as when a midsurface shell section is created within a solid part Abaqus CAE now automatically creates shell to solid coupling constraints so that the shell portions of the model follow the motion of the adjoining solid sections Automatic shell to solid coupling constraints are created only in sections within the same part instance and the sections being constrained must be nearly perpendicular You must manually create shell to solid coupling constraints between separate part instances References Abaqus CAE User s Manual e Defining
20. improved and Abaqus now uses quadratic tetrahedral elements by default instead of linear elements in some cases Transitions from small to large mesh elements are more gradual than in past releases Description The triangular surface meshing process has been improved to minimize gaps between the boundary nodes and the geometry prior to generating the tetrahedral mesh The former process sometimes resulted in a bumpy mesh for certain curved surfaces if quadratic elements were used as shown on the left in Figure 12 1 The image on the right shows the quadratic mesh with the new enhancements Figure 12 1 Triangular surface meshes with quadratic elements 12 1 MESHING In addition if you choose tetrahedral meshing instead of hexahedral hex dominated or wedge meshing to mesh a three dimensional region Abaqus now uses quadratic order tetrahedral elements as the default instead of linear tetrahedral elements However Abaqus may still use linear tetrahedral elements ifnondefault element types were selected before you chose to use tetrahedral meshing The boundary meshing process has been improved to prevent poor boundary elements from causing the tetrahedral mesh to fail Figure 12 2 shows a tetrahedral mesh generated in Abaqus 6 10 with an element error highlighted and the same mesh generated in the current release containing no errors Figure 12 2 Poor tetrahedral boundary elements are removed Reference Abaqus CAE User s Manu
21. in a user defined damage initiation criterion for enriched elements DAMAGE INITIATION A new value is available for the CRITERION parameter Set CRITERION USER to specify a user defined damage initiation criterion for enriched elements Use the new FAILURE MECHANISMS parameter to define the total number of failure mechanisms to be specified in a user defined damage initiation criterion Use the new PROPERTIES parameter to define the number of material constants being specified for a user defined damage initiation criterion DISTRIBUTION A distribution of membrane thickness can now be specified on the data lines DLOAD Load types PB FDD FDT FD1 FD2 WDD WD1 WD2 FI FI and FI2 are now available in Abaqus Aqua working with Abaqus Explicit DYNAMIC Use the new SINGULAR MASS parameter in Abaqus Standard to control velocity 16 2 mod E mod S E mod E mod S E mod S mod S E mod S SUMMARY OF CHANGES and acceleration adjustments if a singular global mass matrix is detected during initialization or during contact impact release computations The improved element time estimation method in Abaqus Explicit is now applied to three dimensional continuum elements in addition to elements with plane stress formulations DYNAMIC TEMPERATURE DISPLACEMENT The improved element time estimation method is now applied to three dimensional continuum elements in addition to elements with plane
22. output CSHEARI and CSHEAR2 to the output database odb file have been made more accurate and less noisy for second order surfaces The improvements tend to be most noticeable in regions with significant variation of contact stress over individual surface facets which commonly occurs near the perimeter of an active contact region Figure 11 1 and Figure 11 2 show two examples involving quadratic tetrahedral elements element type C3D10 in which contact pressure noise has been reduced across versions Adequate mesh refinement remains necessary for accurate predictions with finite element methods As in previous releases contact stress accuracy is generally more accurate with the surface to surface contact formulation than with the node to surface contact formulation Results are not affected by this enhancement for the following surface types surfaces based on linear element types surfaces based on modified tetrahedral or triangular elements and node based surfaces References Abaqus Analysis User s Manual e Surface output in Abaqus Standard and Abaqus Explicit in Output to the output database Section 4 1 3 e Abaqus Standard output variable identifiers Section 4 2 1 Abaqus Keywords Reference Manual e CONTACT OUTPUT 11 2 Penalty stiffness for contact involving gaskets Product Abaqus Standard INTERACTIONS Abaqus gt CPRESS CPRESS Figure 11 1 Reduced CPRESS solution noise across versions for an initial
23. the elastic behavior as well as the yield point and a set of data points defining material plasticity Once you complete the selected calibration behaviors for your material test data Abaqus CAE adds the new material behaviors to your selected material definition As you import process and extract calibration behaviors from material data Abaqus CAE plots the selected material data in the viewport Figure 7 1 shows an isotropic elastic plastic calibration in progress the elastic and plastic material definitions are specified in the Elastic Plastic Isotropic dialog box and they are also plotted in the viewport MATERIALS x1 E3 Stress Strain Data Stress Strain Data UltimatePt BS Stress Strain Data YieldPt Stress Strain Data ElasticModulus Q o Stress Strain Data PlasticPts gt Edit Behavior 7 0 Name Behavior 1 Type Elastic Plastic Isotropic M Elastic Plastic Parameter Sets M Elastic Plastic Data Data set stress Strain Data x Ultimate point 0 04656 7648 92875 R Yield point fo 01564 4105 59591 N Young s modulus 262506 6 0 5 0 Mi M Plastic points oo R 3 0 0 01564 4105 59591 0 0169681725266 4416 63233657 0 0178851409086 4626 40484407 0 0188215140958 4834 82346479 gt 2 0 M Poisson s Ratio Data Data set x Poisson s ratio fo fg tr 1 0 Material Steel x K OK App
24. this software is distributed in Quebec Canada some of the clauses in this agreement are provided below in French Remarque Ce logiciel tant distribu au Qu bec Canada certaines des clauses dans ce contrat sont fournies ci dessous en frangais EXONERATION DE GARANTIE Le logiciel vis par une licence est offert tel quel Toute utilisation de ce logiciel est votre seule risque et p ril Microsoft n accorde aucune autre garantie expresse Vous pouvez b n ficier de droits additionnels en vertu du droit local sur la protection des consommateurs que ce contrat ne peut modifier L o elles sont permises par le droit locale les garanties implicites de qualit marchande d ad quation un usage particulier et d absence de contrefa on sont exclues LIMITATION DES DOMMAGES INT R TS ET EXCLUSION DE RESPONSABILIT POUR LES DOMMAGES Vous pouvez obtenir de Microsoft et de ses fournisseurs une indemnisation en cas de dommages directs uniquement hauteur de 5 00 US Vous ne pouvez pr tendre aucune indemnisation pour les autres dommages y compris les dommages sp ciaux indirects ou accessoires et pertes de b n fices Cette limitation concerne tout ce qui est reli au logiciel aux services ou au contenu y compris le code figurant sur des sites Internet tiers ou dans des programmes tiers et les r clamations au titre de violation de contrat ou de garantie ou au titre de responsabilit stricte de n gligence ou d
25. utilities and plug ins This chapter discusses additional user programs that can be run with Abaqus It provides an overview of the following enhancement e Defining damage initiation criterion via user subroutine UDMGINTI Section 14 1 14 1 Defining damage initiation criterion via user subroutine UDMGINI Product Abaqus Standard Benefits This user subroutine allows you to customize damage initiation criterion Description User subroutine UDMGINT is used to specify user defined damage initiation criterion References Abaqus Keywords Reference Manual e DAMAGE INITIATION Abaqus User Subroutines Reference Manual e UDMGINI Section 1 1 23 Abaqus SCRIPTING INTERFACE 15 Abaqus Scripting Interface This chapter discusses using the Abaqus Scripting Interface to write user scripts Abaqus makes every attempt to be backward compatible and can execute most Abaqus Scripting Interface scripts from previous releases of Abaqus However backward compatibility is not guaranteed beyond several releases of Abaqus and it is recommended that you upgrade your commands to the most recent release A complete list of Abaqus Scripting Interface commands that have changed is included in Summary of Abaqus Scripting Interface changes between Abaqus 6 10 and Abaqus 6 10 EF in the Abaqus Scripting Reference Manual This chapter provides an overview of the following enhancements e Setting the last main file to open on startup in the Ab
26. 0 1 4 3 MODELING MODELING Abaqus CAE User s Manual e Importing a substructure into a model database as a part Section 10 7 13 in the online HTML version of this manual e Configuring a substructure generation procedure in Configuring linear perturbation analysis procedures Section 14 11 2 in the online HTML version of this manual e Modifying field output requests Section 14 12 2 in the online HTML version of this manual e Using the boundary condition editors Section 16 10 in the online HTML version of this manual e Chapter 38 Substructures 4 2 Application of fluid cavity pressure on the fluid exchange surface Product Abaqus Explicit Benefits You can now specify that the fluid cavity pressure should be applied to the fluid exchange surface as an equivalent load on the periphery of the surface Description The fluid exchange surface is part of a fluid cavity and the cavity pressure is applied on it by default If the fluid exchange surface represents a vent and is meshed such that it includes nodes away from its perimeter the cavity pressure acting on the vent surface can lead to local bulging due to the typically soft stiffness used to represent the vent The local bulging may lead to inaccurate leakage area computation thus affecting the mass flow through the vent To model the fluid exchange through a vent Abaqus Explicit provides an option to apply an equivalent line pressure loa
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28. 6 6 node triangular prism fluid element 16 2 Changes in Abaqus options This section summarizes the changes and the additions that have been made to the options that define an Abaqus model mod S AMPLITUDE The SCALEY and SHIFTY parameters are no longer supported for amplitudes defined by user subroutines mod E AQUA This option can now be used in Abaqus Explicit to define the steady fluid field for submerged structures 5 SUMMARY OF CHANGES mod S mod S mod E mod E mod S mod S mod S mod E mod S E BEAM GENERAL SECTION Use the new LUMPED parameter to specify the mass matrix that will be used for linear Timoshenko beam elements in frequency extraction and modal analysis procedures Use the new TAPER parameter to define linear section behavior of tapered cross sections BEAM SECTION Use the new LUMPED parameter to specify the mass matrix that will be used for linear Timoshenko beam elements in frequency extraction and modal analysis procedures Use the new TAPER parameter to define linear section behavior of tapered cross sections CLOAD Load types TSB TFD TWD and TSI are now available in Abaqus Aqua working with Abaqus Explicit CONTACT CONTROLS ASSIGNMENT The default value for the TYPE parameter is now ENHANCED EDGE TRACKING DAMAGE EVOLUTION Use the new FAILURE INDEX parameter to define the damage evolution laws corresponding to each failure mechanism specified
29. EMBRANE SECTION Abaqus Verification Manual e Spatially varying element properties Section 5 1 3 4 8 Composite layer thickness distribution for shell elements Product Abaqus Explicit Benefits Using a distribution to specify spatially varying composite layer thicknesses on shell elements greatly simplifies the modeling process and improves performance for models with a significant amount of element property variation Description In Abaqus Explicit you can define composite layer thicknesses for shell elements using a distribution This enhancement allows you to minimize the number of section definitions needed for a model that has significant variation of these features which can lead to model simplification and performance improvements References Abaqus Analysis User s Manual e Distribution definition Section 2 7 1 e Using a shell section integrated during the analysis to define the section behavior Section 26 6 5 e Using a general shell section to define the section behavior Section 26 6 6 Abaqus Keywords Reference Manual e DISTRIBUTION e SHELL GENERAL SECTION e SHELL SECTION Abaqus Verification Manual e Spatially varying element properties Section 5 1 3 4 10 MODEL IMPORT AND EXPORT 5 Model import and export This chapter discusses features related to importing and exporting models to or from Abaqus CAE It provides an overview of the following enhancements e Exporti
30. IXFEM Number of cycles to initialize the crack at the enriched element FLUXS Current values of distributed heat or concentration fluxes not available for nonuniform fluxes including those imported using the HFL co simulation field ID 16 5 SUMMARY OF CHANGES Element integration point variables mod S new S E new S new S new E FV Predefined field variables including those imported using the FV co simulation field ID LOCALDIRn Direction cosines of the local material directions for an anisotropic hyperelastic material model MISESONLY Mises equivalent stress When MISESONLY is requested instead of MISES the stress components are not written to the output database odb file consequently the size of the database is reduced PRESSONLY Equivalent pressure stress When PRESSONLY is requested instead of PRESS the stress components are not written to the output database odb file consequently the size of the database is reduced TEMPMAVG Temperature computed as a mass fraction weighted average of all materials in the element Integrated variables new E new E Element variables new C new C Nodal variables mod S MASSEUL Total mass of each Eulerian material instance in the element set VOLEUL Total volume of each Eulerian material instance in the element set TURBEPS Energy dissipation rate TURBKE Turbulent kinetic energy CF All components of p
31. MS MPI under a license directly from Microsoft or you may proceed as described in the Installation Instructions for Abaqus Programs without entering into a separate license with Microsoft If you choose to use MS MPI as made available by Dassault Syst mes or its subsidiary use and reproduction of MS MPI by your business governmental or academic entity will be subject to the restrictions as stated in the MS MPI license agreement below see MICROSOFT SOFTWARE LICENSE TERMS and will be terminable by Microsoft under the conditions in that software license agreement MS MPI is NOT an Abaqus Program and is NOT warranted or supported by Dassault Systemes or its subsidiaries Without limiting the foregoing MICROSOFT SOFTWARE LICENSE TERMS MICROSOFT HPC Pack MS MPI Redistributable Pack These license terms are an agreement between Microsoft Corporation or based on where you live one of its affiliates and you Please read them They apply to the software named above which includes the media on which you received it if any The terms also apply to any Microsoft updates supplements Internet based services and support services for this software unless other terms accompany those items If so those terms apply BY USING THE SOFTWARE YOU ACCEPT THESE TERMS IF YOU DO NOT ACCEPT THEM DO NOT USE THE SOFTWARE If you comply with these license terms you have the rights below 1 INSTALLATION AND USE RIGHTS You may install and use
32. P MPI is an implementation from Hewlett Packard Company HP of the Message Passing Interface standard that may be used for parallel execution of Abaqus Standard Abaqus Explicit and Abaqus CFD HP MPI is the property of HP and is not an Abaqus Program Under a license from HP to Dassault Systemes Simulia Corp HP MPI is made available to licensed Abaqus users at no additional charge You are a licensed Abaqus user if you are authorized to use Abaqus software under a software license agreement between Dassault Syst mes or its subsidiary and the business governmental or academic entity with which you are associated If you are a licensed Abaqus user you may obtain HP MPI under a license directly from HP or you may proceed as described in the Installation Instructions for Abaqus Programs without entering into a separate license with HP If you choose to install HP MPI as made available by Dassault Syst mes or its subsidiary use and reproduction of HP MPI by your business governmental or academic entity will be subject to the same restrictions as are in the license agreement with your business governmental or academic entity that govern the use of Abaqus software and will be terminable by Dassault Syst mes or its subsidiary on the same conditions as are in the Abaqus software license agreement However HP MPI is NOT an Abaqus Program and is NOT warranted or supported by Dassault Syst mes or its subsidiaries Without limiting the foregoing HP
33. Pattern General Entity Display rf M Options M Show ties IV Show shell to solid couplings IV Show distributing couplings IV Show kinematic couplings IV Show rigid bodies Note Constraints must also be added via Display Group operations For them to be shown in the viewport OK Apply Defaults Cancel Figure 13 3 Enabling disabling display of constraints Abaqus CAE Usage Visualization module View ODB Display Options Constraints tab Tools Display Group Create References Abaqus CAE User s Manual e Controlling the display of constraints in the Visualization module Section 54 11 e Creating or editing a display group Section 77 2 1 in the online HTML version of this manual 13 5 OUTPUT AND VISUALIZATION 13 4 Displaying free body nodal forces in symbol plots Product Abaqus CAE Benefits You can now create a symbol plot that displays nodal forces as free body vectors that show force and moment distributions across sections of a model This enhancement enables you to visualize individual vectors on nodes that vector sum to the total free body vector The new symbol plot functionality complements the existing free body cut options which allow you to obtain the forces and moments at a location in the part or along a view cut Description Symbol plots in Abaqus CAE now support the display of free body nodal forces Figure 13 4 shows a model in which several nodes have an imb
34. Section 6 8 1 e Three dimensional solid element library Section 25 1 4 Abaqus CAE User s Manual e Element type assignment Section 17 5 3 Abaqus Example Problems Manual e Calculation of phreatic surface in an earth dam Section 10 1 2 Abaqus Benchmarks Manual e Partially saturated flow in a porous medium Section 1 9 1 e Demand wettability of a porous medium coupled analysis Section 1 9 2 e Wicking in a partially saturated porous medium Section 1 9 3 e Desaturation in a column of porous material Section 1 9 4 8 1 ELEMENTS Abaqus Verification Manual e Continuum pore pressure elements Section 1 4 7 Abaqus Theory Manual e Effective stress principle for porous media Section 2 8 1 8 2 Tapered beams and improved mass formulation Products Abaqus Standard Abaqus CAE Benefits You can now define Timoshenko beams with linearly tapered cross sections in Abaqus Standard and in Abaqus CAE You can also use an improved mass formulation for linear Timoshenko beams based on cubic deflections Description Timoshenko beams in Abaqus Standard now support linearly tapered general beam sections and standard library sections This enhancement enables you to create tapered beam geometry in your model and to import tapered general beam sections from third party applications such as Nastran A new improved mass formulation for linear Timoshenko beams is also available The new m
35. al e Chapter 17 The Mesh module 12 2 Mesh stack orientations Product Abaqus CAE Benefits You can now assign a mesh stack direction for solid parts that is independent of the sweep direction and the cells need not be swept or bottom up meshed You can assign a single stack orientation to multiple cells In addition the shell element normal and beam truss tangent assignment tools are now available in the Mesh module 12 2 MESHING Description Continuum shell cohesive cylindrical and gasket elements all include directional properties that depend on the stack orientation of the elements You can now assign a stack direction based on the orientation of a reference face If the cells are already meshed Abaqus CAE changes the stack direction of the elements as needed If there is no mesh or a partial mesh Abaqus CAE uses the reference face orientation to define the stack direction of the elements as you mesh the part As shown in Figure 12 3 the mesh stack orientation can be completely separate from the sweep direction for a swept part The stack orientation shown by the red arrow with the top element faces colored brown is perpendicular to the sweep paths black arrows that could be used for this part a Figure 12 3 The stack orientation need not follow the sweep direction You can assign mesh orientations using the Mesh menu the tool in the Mesh module toolbox or the Assign Stack Direction button located in the Mesh
36. alance of forces or moments due to an applied load the symbol plot displays free body vectors to identify these nodes The figure also shows the Field Output dialog box with the new FREEBODY symbol variable selected FREEBODY Resultant 1 314e 02 0 000e 00 ma ge Field Output Step Frame Step 1 Step 1 Frame 1 of Output Yariable T List only variables with results J z Point loads at nodes Point moments at nodes Logarithmic strain components at integration points Plastic strain components at integration points RF Reaction force at nodes RM Reaction moment at nodes 5 Stress components at integration points u Spatial displacement at nodes UR Rotational displacement at nodes Figure 13 4 Free body nodal forces displayed in a symbol plot The symbol plot displays free body vectors at each node that has a nonzero force summation The total forces for the entire part always equal zero 13 6 OUTPUT AND VISUALIZATION The output database you select must include results from output variable NFORC Abaqus CAE calculates the vectors for a symbol plot of free body nodal forces using the contents of the current display group Symbol plots of free body nodal forces can be customized using the same vector display options that are available for all other symbol plots you can adjust the vector arrow color size style and density and you can display or h
37. an define the rake you want to use by defining a line segment or by specifying a path definition If you want to use a line segment for your stream rake you can either pick starting and ending nodes from the viewport or enter the global coordinates for the points you want to use The Stream Manager enables you to display or hide multiple stream definitions in the viewport and for each stream you can display flow data upstream from the rake location downstream from the rake location or in both directions You can also customize the color and thickness of streamlines in the current viewport Streamlines can be displayed with a uniform color or by using a contour spectrum that matches the current primary field output variable If you display streamlines with contours you can choose between a banded contour spectrum or a continuous spectrum In addition you can add arrows to the streamlines that indicate the direction of fluid flow and you can increase or decrease the number of arrows to clarify their display Streamlines display flow data for the currently selected stream variable which you can control from the new Stream Variable tabbed page in the Field Output dialog box Most flow analyses include both velocity and vorticity data 13 2 OUTPUT AND VISUALIZATION Magnitude 0 000e 00 Figure 13 1 Twelve pointed stream showing velocity data for a flow analysis through a manifold Abaqus CAE Usage Visualization module Tools
38. any number of copies of the software on your premises as follows e Individual Use You may install and use the software with third party programs designed and developed for use with the software Production Use You may install and use any number of copies of the software on your premises to design develop test and demonstrate your programs 2 RIGHT TO DISTRIBUTE If you comply with the terms below you may copy and distribute the object code form of the software listed in the REDIST TXT file in conjunction with the programs you develop Further you may permit distributors of your programs to copy and distribute the software as part of those programs you create a Distribution Requirements If you distribute the software you must add significant primary functionality to it in your programs require distributors and external end users to agree to terms that protect it at least as much as this agreement display your valid copyright notice on your programs and indemnify defend and hold harmless Microsoft from any claims including attorneys fees related to the distribution or use of your programs b Distribution Restrictions You may not alter any copyright trademark or patent notice in the software use Microsoft s trademarks in your programs names or in a way that suggests your programs come from or are endorsed by Microsoft distribute the software to run on a platform other than the Windows platform include the softwar
39. aqus PDE Section 15 1 e Support for NumPy library for Python in Abaqus Section 15 2 15 1 Setting the last main file to open on startup in the Abaqus PDE Product Abaqus CAE Benefits The Abaqus Python Development Environment PDE can now automatically reopen the main file that was selected upon your last session This enhancement improves the ease of use of this functionality Description If you toggle on the Set Last Main File on Startup setting during your Abaqus PDE session the Abaqus PDE will automatically reopen the most recently selected main file the next time you open the utility The main file is the script being tested by the Abaqus PDE environment Abaqus CAE Usage All modules File Abaqus PDE Settings Set Last Main File on Startup Reference Abaqus Scripting User s Manual e Selecting the settings for use with a file Section 7 2 4 15 2 Support for NumPy library for Python in Abaqus Products Abaqus Standard Abaqus Explicit Abaqus CAE Benefits Abaqus now supports the NumPy extension to Python for mathematical functions replacing its predecessor Numeric which is no longer supported Support for NumPy expands the library of available mathematical functions and provides improved performance Abaqus SCRIPTING INTERFACE Description The Numeric library of mathematical functions for Python has been deprecated so Abaqus now supports NumPy The NumPy library includes a Numeric compatible modu
40. ass matrix is based on cubic interpolations and provides much better estimates of the frequency response of coarse meshes especially when used in conjunction with the automatic calculation of the slenderness correction factor based on the section s elastic properties Abaqus CAE Usage Property module Beam section editor Section integration Before analysis Beam shape along length Tapered and Stiffness tabbed page Use consistent mass matrix formulation References Abaqus Analysis User s Manual e Choosing a beam element Section 26 3 3 e Defining linear section behavior for tapered cross sections in Abaqus Standard in Using a general beam section to define the section behavior Section 26 3 7 Abaqus CAE User s Manual e Creating beam sections Section 12 12 10 in the online HTML version of this manual Abaqus Keywords Reference Manual e BEAM GENERAL SECTION e BEAM SECTION ELEMENTS 8 3 New 6 node triangular prism for fluid flow problems Products Abaqus CFD Abaqus CAE Benefits The fluid flow elements in the Abaqus CFD element library now include the triangular prism FC3D6 element This element adds modeling flexibility for fluid flow analyses Description Fluid flow elements are provided in Abaqus CFD for modeling the fluid domain The new FC3D6 element supports all of the loadings material behaviors and boundary conditions supported by the existing fluid flow elements Abaqus CAE
41. astran models Products Abaqus Standard Abaqus Explicit Abaqus CAE 5 1 MODEL IMPORT AND EXPORT Benefits You can now translate a Nastran model containing many different membrane properties to an Abaqus model that contains a single membrane section Description The abaqus fromNastran execution procedure and the Import Nastran Input File dialog box now provide translation and import for Nastran membrane data You can control the section consolidation of membrane data using the same options that control the section consolidation of section data The distribution parameter settings for the execution procedure and the Section consolidation options in Abaqus CAE determine whether Abaqus creates a membrane section for each Nastran PSHELL or PCOMP property ID creates sections for all homogeneous elements that reference the same material or creates a separate membrane section for each combination of thickness or orientation in the Nastran input file Abaqus CAE Usage All modules File Import Model File Format Nastran Section consolidation options References Abaqus Analysis User s Manual e Translating Nastran bulk data files to Abaqus input files Section 3 2 21 Abaqus CAE User s Manual e Importing a model from a Nastran input file Section 10 5 4 ANALYSIS PROCEDURES 6 Analysis procedures This chapter discusses features related to defining an analysis It provides an overview of the following enhancements
42. availability products are available on the SIMULIA ftp site Contact your local office or representative for details Products supported on each of the following combinations of supported operating systems and processors are summarized in Table 1 1 Interactive products include Abaqus CAE and Abaqus Viewer Analysis products include Abaqus Standard Abaqus Explicit and Abaqus CFD Table 1 1 Overview of platform and product support Platform Availability Supported products Windows x86 32 DVD Interactive and analysis products Windows x86 64 DVD Interactive and analysis products Linux x86 64 DVD Interactive and analysis products Linux Itanium ftp Abaqus Standard and Abaqus Explicit AIX Power ftp Analysis products For current and complete details on supported Abaqus products and platforms including platform information for add on products interfaces and translators refer to the Abaqus systems information available through the Support page at www simulia com For more information see Appendix A System requirements of the Abaqus Installation and Licensing Guide The remaining chapters in this book provide details on these and other new features of Abaqus 6 10 EF In addition to the enhancements listed here most of the known bugs in Abaqus 6 10 are corrected 1 2 Abaqus products Individual components of the Abaqus suite are described in this section Analysis e Abaqus Standard This general purpose f
43. ay be trademarks or service marks of their respective owners For additional information concerning trademarks copyrights and licenses see the notices at http www simulia com products products_legal html The Abaqus Software and its documentation includes processes under U S Patents 5 920 491 6 044 210 and 6 697 770 Dassault Syst mes or its subsidiaries may also have other patents or pending patent applications trademarks copyrights or other intellectual property rights covering Abaqus Software and or its documentation No license of such patents trademarks copyrights or other intellectual property rights is provided or implied except as may be expressly provided in a written license agreement from Dassault Syst mes or its subsidiary OPEN SOURCE PROGRAMS This release of the Abaqus Software uses several open source or free programs OS Programs Each such program is distributed with Abaqus software in binary form and except as permitted by the applicable license without modification Each such program is available online for free downloading and if required by the applicable OS Program license the source code will be made available by Dassault Systemes or its subsidiary upon request For a complete list of OS Programs utilized by Abaqus as well as licensing documentation for these programs see http www simulia com products products_legal html HP MPI LICENSE TERMS HP MPI is included with this release of Abaqus software H
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45. curate and less noisy for second order surfaces Contact stress output improvements Section 11 1 e Output enhancements reduce the size of the output database including changing the extrapolation and interpolation schemes in Abaqus Standard for three commonly used output variables stress Mises equivalent stress and equivalent pressure stress Output database size reduction Section 13 1 e Timoshenko beams in Abaqus Standard now support linearly tapered general beam sections and standard library sections Tapered beams and improved mass formulation Section 8 2 e New scalable thread parallel execution capability of the AMS eigensolver significantly improves the performance of frequency extraction analyses AMS eigensolver performance improvement Section 6 5 e The iterative solver algorithm offers improved handling of dense linear constraints to better achieve convergence Enhanced iterative solver capability to handle dense linear constraints Section 6 6 e More efficient and robust edge to edge contact interactions in general contact are available in Abaqus Explicit Edge to edge general contact enhancement Section 11 3 e Abaqus Aqua loading to apply wave drag and buoyancy loading to structures modeled using pipe and beam elements is now available with Abaqus Explicit Explicit dynamics analysis using Abaqus Aqua Section 9 5 e Abaqus CFD provides support for the RNG k turbulence model w
46. current viewport However when this option is toggled off you can modify the field output variable selections without automatically switching plot states in the current viewport Abaqus CAE Usage Visualization module Field Output toolbar toggle Reference Abaqus CAE User s Manual e Using the field output toolbar Section 41 4 2 13 7 Saving and operating on history output X Y data simultaneously Product Abaqus CAE Benefits Abaqus CAE is enhanced to allow you to save and operate on history output data at the same time Description When saving history data from the Save XY Data As dialog box you can now apply any of the Abaqus CAE built in operations to the data set The available operations include a variety of mathematical trigonometric logarithmic exponential and other functions Figure 13 6 shows some of the single operand functions available If you are saving two history output variables at the same time there are several new dual operand functions available e append XY XY e combine XY XY e power XY XY Ifyou are saving three or more history output variables at the same time there are two new multi operand functions available e append XY XY e vectorMagnitude XY XY XY 13 9 Ei OUTPUT AND VISUALIZATION gt Save XY Data As x Name ixvData 1 Save Operation logixY log OfX normalize x radianToDegree xX IV Plot curves on OK Note
47. d on the vent periphery References Abaqus Analysis User s Manual e Fluid exchange definition Section 11 6 3 Abaqus Keywords Reference Manual e FLUID EXCHANGE Abaqus Verification Manual e Surface based fluid cavities Section 5 1 23 4 3 Enhancements to the offset extend and blend face tools Product Abaqus CAE Benefits Three of the face editing tools added in Abaqus 6 10 have been enhanced in the current release Enhancements to the offset extend and blend tools for editing faces simplify the operations reduce the need 4 4 MODELING for viewport selections and add new control options for use when you edit models or create midsurface models Description The Offset Faces operation now includes an option that allows Abaqus CAE to select target faces automatically for determining the offset distance The new Auto Select button shown in Figure 4 3 is available only when the faces to offset are part of the reference representation used for creating a midsurface model When you use automatic selection Abaqus CAE considers faces from the opposite side of the midsurface region from those that you selected to offset M Offset Faces x Faces to offset Picked Eg Offset Use target faces to compute distance 0 Select Auto Select Half the average distance Fraction distance to closest point on Face Fraction distance to Farthest point on face Distance rom Note The
48. del contains a large amount of dense constraints performance may be reduced See Iterative linear equation solver Section 6 1 5 of the Abaqus Analysis User s Manual for more details Reference Abaqus Analysis User s Manual e Iterative linear equation solver Section 6 1 5 6 7 Defining a spectrum using values of S as a function of frequency and damping in Abaqus CAE Products Abaqus Standard Abaqus CAE Benefits The ability to define a spectrum in Abaqus CAE increases the coverage of Abaqus product functionality Description When performing a response spectrum analysis you must first convert the given dynamic event into a spectrum In Abaqus CAE you can now use the Amplitude toolset to define a spectrum by specifying the magnitude of the spectrum at all frequencies at each damping value You can then use the spectrum amplitude in a response spectrum analysis Figure 6 1 shows how you can read the data for the spectrum amplitude from a file Abaqus CAE Usage Step module Interaction module or Load module Tools Amplitude Create Type Spectrum define spectrum Step module Step Create Linear perturbation Response spectrum Use response spectrum select spectrum References Abaqus Analysis User s Manual e Response spectrum analysis Section 6 3 10 Abaqus CAE User s Manual e Defining a spectrum Section 56 11 in the online HTML version of this manual ANALYSIS PROCEDURES Edit Am
49. e Change in default element stable time estimation for three dimensional continuum elements Section 6 1 e Continued enhancements to the XFEM based crack propagation capability Section 6 2 e New RNG k epsilon turbulence model for fluid dynamic analysis Section 6 3 e Enhancements to coupled structural acoustic analysis Section 6 4 e AMS eigensolver performance improvement Section 6 5 e Enhanced iterative solver capability to handle dense linear constraints Section 6 6 e Defining a spectrum using values of S as a function of frequency and damping in Abaqus CAE Section 6 7 e Creating a spectrum from a user specified amplitude in Abaqus Standard Section 6 8 e New modal and directional summation methods for response spectrum analysis Section 6 9 e Using uncoupled eigenmodes to generate a coupled acoustic structural substructure Section 6 10 6 1 Change in default element stable time estimation for three dimensional continuum elements Product Abaqus Explicit Benefits The default element stable time estimation now provides a larger element stable time increment For analyses using variable mass scaling less total mass will need to be added to achieve the given stable time increment Description By default Abaqus Explicit will now use the improved element time estimation method to calculate the element stable time increment for three dimensional elements This impro
50. e at http www simulia com locations locations html CONTENTS Contents 1 Introduction to Abaqus 6 10 EF Key features of Abaqus 6 10 EF 1 1 Abaqus products 1 2 Changes in interpretation of input data 1 3 2 General enhancements Enhancements to the Abaqus installer 2 1 Context bar list navigation in Abaqus CAE 22 Copying step dependent objects to a different step 2 3 3 Execution Parallel ordering for the direct sparse solver 3 1 Thread parallel element and contact search calculations for transient fidelity dynamic analyses 3 2 Parallel support for Abaqus Standard to Abaqus Standard import 3 3 Parallel support for Abaqus Standard co simulation 3 4 4 Modeling Substructures in Abaqus CAE 4 1 Application of fluid cavity pressure on the fluid exchange surface 4 2 Enhancements to the offset extend and blend face tools 43 Creating a wire from edge feature 44 Adding a mirror feature to a part 4 5 Diagnostics for modeling errors associated with mass properties 4 6 Thickness and material orientation distributions for membrane elements and sections 4 7 Composite layer thickness distribution for shell elements 4 8 5 Model import and export Exporting models in OBJ format 5 1 Improved import and translation of membrane data from Nastran models 52 6 Analysis procedures Change in default element stable time estimation for three dimensional continuum elements 6 1 Continued enhancements to the XFEM based crack propagation capability 6 2 New RNG
51. e elements Section 8 2 Tapered beams and improved mass formulation Section 8 3 New 6 node triangular prism for fluid flow problems Section 9 1 Three dimensional pressure penetration loading Section 9 2 Changing the coordinate system for symmetry boundary conditions Section 9 3 Section 10 1 Section 12 1 Section 12 2 Section 13 1 Section 13 2 Section 13 3 Section 13 4 Total force distribution option for pressure loads Automatic shell to solid coupling constraints Tetrahedral meshing enhancements Mesh stack orientations Output database size reduction Streamlines Displaying constraints in the Visualization module Displaying free body nodal forces in symbol plots Section 13 5 Section 13 6 Section 13 7 Section 13 8 Section 15 1 Section 15 2 PRODUCT INDEX Enhanced query options for probing the model Controlling plot state and Field Output toolbar synchronization Saving and operating on history output X Y data simultaneously Toolbox button for ply stack plot options Setting the last main file to open on startup in the Abaqus PDE Support for NumPy library for Python in Abaqus Abaqus AMS Section 6 5 AMS eigensolver performance improvement Abaqus Aqua Section 9 5 Explicit dynamics analysis using Abaqus Aqua About SIMULIA SIMULIA is the Dassault Syst mes brand that delivers a scalable portfolio of Realistic Simulation solutions including the Abaqus product suite for Unified Finite Element Analysis
52. e in malicious deceptive or unlawful programs or modify or distribute the source code of the software so that any part of it becomes subject to an Excluded License An Excluded License is one that requires as a condition of use modification or distribution that the code be disclosed or distributed in source code form or others have the right to modify it 3 Scope of License The software is licensed not sold This agreement only gives you some rights to use the software Microsoft reserves all other rights Unless applicable law gives you more rights despite this limitation you may use the software only as expressly permitted in this agreement In doing so you must comply with any technical limitations in the software that only allow you to use it in certain ways You may not work around any technical limitations in the software reverse engineer decompile or disassemble the software except and only to the extent that applicable law expressly permits despite this limitation make more copies of the software than specified in this agreement or allowed by applicable law despite this limitation e publish the software for others to copy rent lease or lend the software transfer the software or this agreement to any third party except as permitted in Section 2 or use the software for commercial software hosting services BACKUP COPY You may make one backup copy of the software You may use it only to re
53. ectrum procedure in Configuring linear perturbation analysis procedures Section 14 11 2 in the online HTML version of this manual Abaqus Keywords Reference Manual e RESPONSE SPECTRUM ANALYSIS PROCEDURES Abaqus Theory Manual e Response spectrum analysis Section 2 5 6 6 10 Using uncoupled eigenmodes to generate a coupled acoustic structural substructure Product Abaqus Standard Benefits You can select uncoupled eigenmodes to generate a coupled acoustic structural substructure This enhancement allows you to take advantage of the benefits offered by the AMS eigensolver to generate substructures from large NVH models Description Abaqus Standard can now use uncoupled eigenmodes generated from the SIM based Lanczos or AMS eigensolver to generate a coupled acoustic structural substructure In this case the effect of acoustic structural coupling is included during the substructure generation References Abaqus Analysis User s Manual e Defining substructures Section 10 1 2 Abaqus Keywords Reference Manual e FREQUENCY e SELECT EIGENMODES e SUBSTRUCTURE GENERATE 7 MATERIALS Materials This chapter discusses new material models or changes to existing material models It provides an overview of the following enhancement 7 1 Material calibration Section 7 1 Material calibration Product Abaqus CAE Benefits You can now calibrate an isotropic elastic plastic material mod
54. el in Abaqus using material test data This enhancement enables you to import material test data into Abaqus CAE process the data to improve their suitability for material modeling and derive isotropic elastic and plastic material behaviors from the data Description Material calibration is the process of deriving Abaqus material behaviors from sets of material test data You can create material calibrations in three general steps Create data sets by importing text files of material test data into Abaqus CAE You can customize these data by adding deleting or modifying individual rows In addition you can label the columns in a data set with quantity types to describe the data material calibration data sets can be labeled as stress strain force displacement or axial strain transverse strain Process the contents of a data set using filters and tools to make the data more suitable for use in material modeling The processing options enable you to scale the data along either axis to smooth the curve of the data and to truncate data points above a specified value along the X axis You can also convert a data set between nominal and true forms Define calibration behaviors to derive elasticity and plasticity related parameters from the data You can define isotropic elastic calibration behaviors to define the Young s modulus and Poisson s ratio from material data or you can define an isotropic elastic plastic calibration behavior to define
55. element with the most severe one governing the actual failure The XFEM capability can be used to simulate a discrete crack growth along an arbitrary path subjected to a sub critical cyclic loading based on the principles of linear elastic fracture mechanics LEFM in a low cycle fatigue analysis using the direct cyclic approach The fracture energy release rates at the crack tips in the enriched elements are calculated based on the modified VCCT technique The onset and crack growth are characterized by using the Paris law which relates the relative fracture energy release rates to crack growth rates A low cycle fatigue step can be the only step can follow a general static step or can be followed by a general static step Multiple low cycle fatigue analysis steps can be included in a single analysis If a fatigue analysis is performed in a model without a pre existing crack a static step followed by the fatigue step can be used to nucleate a crack References Abaqus Analysis User s Manual e Low cycle fatigue analysis using the direct cyclic approach Section 6 2 7 e Modeling discontinuities as an enriched feature using the extended finite element method Section 10 6 1 ANALYSIS PROCEDURES Abaqus Keywords Reference Manual e DAMAGE EVOLUTION e DAMAGE INITIATION e DIRECT CYCLIC e ENRICHMENT e FRACTURE CRITERION Abaqus User Subroutines Reference Manual e UDMGINI Section 1 1 23 Abaqus Benchmarks Manual e
56. emes ADRs may be traded on the US Over The Counter OTC market DASTY For more information visit www 3ds com Abaqus the 3DS logo SIMULIA and CATIA are trademarks or registered trademarks of Dassault Systemes or its subsidiaries in the US and or other countries Other company product and service names may be trademarks or service marks of their respective owners Dassault Syst mes 2010 DASSAULT SYSTEMES
57. eneral analysis procedures Section 14 11 1 in the online HTML version of this manual ANALYSIS PROCEDURES 6 4 Enhancements to coupled structural acoustic analysis Product Abaqus Standard Benefits Enhanced functionality in coupled structural acoustic subspace based steady state dynamic analysis is available Description The following features can be included in coupled structural acoustic steady state dynamic analysis that uses the high performance SIM architecture e You can specify the fluid flow velocity as a predefined field for an acoustic domain e You can use infinite acoustic elements to define an unbounded domain e You can define the volumetric drag coefficient for the acoustic medium as a function of frequency e You can select modes that will be used in a modal procedure References Abaqus Analysis User s Manual e Natural frequency extraction Section 6 3 5 e Subspace based steady state dynamic analysis Section 6 3 9 e Acoustic shock and coupled acoustic structural analysis Section 6 10 1 Abaqus Keywords Reference Manual e ACOUSTIC FLOW VELOCITY e ACOUSTIC MEDIUM e FREQUENCY e SELECT EIGENMODES e STEADY STATE DYNAMICS 6 5 AMS eigensolver performance improvement Products Abaqus Standard Abaqus AMS Benefits New scalable thread parallel execution capability of the AMS eigensolver significantly improves the performance of frequency extraction analyses Description Scalable t
58. ents of Mises stress The figure also illustrates the reorganization of options in the Field Output and Probe Values portions of the dialog box These options now take up less vertical space which enables you to minimize the size of the dialog box and display a larger amount of the viewport as you pick values For tensor quantities you can query for the selected invariant or component for all six direct components of the tensor or for all three principal components of the tensor For vector variables you can query for either the resultant vector value or for one of the individual component values 13 7 OUTPUT AND VISUALIZATION Probe Values xj r Field Output ofa Step 1 Drop Frame 20 Ba Field output variable for Probe S All principals Not averaged r Probe Yalues Select from viewport Key in label Select a display group Probe Elements x Components All Principals x Position integration Pt x Value for S Max In Plane Principal 299035 Part Instance Element ID Type Nodes S Max In Plane Principal S Min In Plane Principal 24 S4R 26 27 38 37 299035 84676 8 100 S4R 28 S4R BOARD 1 109 110 121 12 134069 59214 5 30 31 42 41 216110 737059 S4R 35 36 47 46 825350 73449 3 S4R 14 15 26 25 272580 863818 5 Write to File Cancel Figure 13 5 Probe Values dialog box with all direct components displayed for Mises stress e When you add nodes or ele
59. erpolation regions The source region refers to the heat transfer analysis and is specified by an element set The target region refers to the current analysis and is specified by a node set References Abaqus Analysis User s Manual e Initial conditions in Abaqus Standard and Abaqus Explicit Section 30 2 1 e Predefined fields Section 30 6 1 Abaqus Keywords Reference Manual e INITIAL CONDITIONS e TEMPERATURE PRESCRIBED CONDITIONS 9 5 Explicit dynamics analysis using Abaqus Aqua Products Abaqus Explicit Abaqus Aqua Benefits Abaqus Aqua which previously could be used only with Abaqus Standard is now available with Abaqus Explicit Description In the case of structures submerged in a fluid field such as offshore pipelines used in the oil and natural gas industries appropriate fluid based loads can be applied to simulate the dynamics of such structures You can define the fluid field consisting of steady currents and gravitational waves and identify the model that is potentially submerged in the fluid Abaqus computes the appropriate buoyancy and drag loads transverse drag tangential drag wind drag and inertial loads based on that fluid field Similarly you can define a wind field and identify the exposed structure Abaqus computes the appropriate drag loads based on that wind field Buoyancy and drag loads transverse drag tangential drag wind drag and inertial loads can be applied on linear beam and pipe
60. for the drill stiffness of shell elements in Abaqus Explicit For Eulerian EC3D8R elements the pure viscous form of hourglass control is the default form and the integral viscoelastic form of hourglass control is not supported SHELL GENERAL SECTION This option now allows the specification of a distribution to define composite layer thickness for conventional shell elements in an Abaqus Explicit analysis SHELL SECTION This option now allows the specification of a distribution to define composite layer thickness for conventional shell elements in an Abaqus Explicit analysis SPECTRUM Use the new ABSOLUTE AMPLITUDE CREATE DAMPING GENERATE EVENT TYPE FILE RELATIVE and TIME INCREMENT parameters to create a spectrum from a user specified amplitude that describes a dynamic event TEMPERATURE Use the new DRIVING ELSETS parameter to define the source region from where the temperatures are read from a previous analysis and the target region onto which the temperatures are mapped in the current analysis WAVE This option is now available in Abaqus Explicit to define the wave field for submerged structures Only fifth order Stokes wave theory is available in Abaqus Explicit WIND This option is now available in Abaqus Explicit to define the wind field for submerged structures 16 3 Changes in Abaqus user subroutines This section summarizes the changes and the additions that have been made to user subroutines that can be used in
61. fore the linear flexibility data are obtained Multiple flexible components generated by Abaqus can be included in an MSC ADAMS model Most Abaqus structural elements are supported by the interface Associative interfaces and geometry translators e CATIA V5 Associative Interface This add on capability for Abaqus CAE creates a connection between a CATIA V5 session and an Abaqus CAE session This connection can be used to transfer model information from CATIA VS to Abaqus CAE Subsequent modifications to the model in CATIA V5 can be propagated to the Abaqus CAE model while retaining any analysis features such as loads or boundary conditions that were defined on the model in Abaqus CAE The geometry of CATIA V5 format Part CATPart and Product CATProduct files can also be imported directly into Abaqus CAE e SolidWorks Associative Interface This add on capability for Abaqus CAE creates a connection between a SolidWorks session and an Abaqus CAE session This connection can be used to transfer model information from SolidWorks to Abaqus CAE Subsequent modifications to the model in SolidWorks can be propagated to the Abaqus CAE model while retaining any analysis features such as loads or boundary conditions that were defined on the model in Abaqus CAE e Pro ENGINEER Associative Interface This add on capability for Abaqus CAE creates a connection between a Pro ENGINEER session and an Abaqus CAE session This connection can be used to transfe
62. format abaqus fetch extracts example input files from the libraries included with the release abaqus findkeyword provides a list of sample problems that use the specified Abaqus options This utility will help users find examples of features they may be using for the first time abaqus free converts all fixed format data in an input file to free format abaqus licensing provides a summary of Abaqus license usage reporting and the available FLEXnet Licensing utilities abaqus make compiles and links user written postprocessing programs for Abaqus and creates user defined libraries of Abaqus Standard and Abaqus Explicit user subroutines abaqus networkDBConnector creates a connection to a network ODB server that can be used to access a remote output database abaqus restartjoin appends an output database file produced by a restart analysis of a model to the output database produced by the original analysis of that model abaqus odbcombine combines the results data in two or more Abaqus output database files into a single output database file abaqus odbreport creates organized reports of output database information in text HTML or CSV file formats abaqus python accesses the Python interpreter abaqus resume resumes an Abaqus analysis job abaqus script initiates a Python scripting session abaqus substructurecombine combines the model and results data produced by two of a model s substructures into a single output database file
63. g algorithm for edge to edge contact in Abaqus Explicit is now used by default CONTACT CONTROLS ASSIGNMENT TYPE ENHANCED EDGE TRACKING This algorithm utilizes more local information than the alternative tracking algorithm TYPE EDGE TRACKING in tracking contact between edges and typically reduces the extent of global tracking required For a complete list of changes to the Abaqus input file interface refer to Chapter 16 Summary of changes GENERAL ENHANCEMENTS 2 General enhancements This chapter describes the following general enhancements that have been made to Abaqus e Enhancements to the Abaqus installer Section 2 1 e Context bar list navigation in Abaqus CAE Section 2 2 e Copying step dependent objects to a different step Section 2 3 2 1 Enhancements to the Abaqus installer Benefits Several installer enhancements simplify Abaqus client installation and setup Description The Abaqus installer has the following new features in Abaqus 6 10 EF e If you are installing Abaqus on a Windows mounted network drive to be run from client Windows computers you can enter a Universal Naming Convention UNC path as the target installation directory for example ComputerName SharedFolder path Microsoft UNC paths can be used instead of Windows mapped drive paths e Ifyou run the Windows client installer with Windows Administrator privileges it will install the Abaqus prerequisite libraries as follows
64. gure 4 1 shows a model of a backhoe in which one component the dipper has been modeled with a substructure part instance Figure 4 1 Translucent display of a substructure part instance in a backhoe model e You can now request field output for one or more sets in a substructure If you specify the Substructure as the Domain for your request the field output editor enables you to open the Select Substructure Sets dialog box to select the set or sets for which you want to recover output within one or more substructure part instances Figure 4 2 displays this dialog box with five sets selected for output in the first substructure part instance FAN Z114 1 4 2 Select Substructure Sets xj Available recovery sets v V FAN z114 1 I Entire Substructure F HUB P NHUB I NLOOK NPRINT lV NxXSYMM lV nysymm IV RETAINED IV RINGB IV RINGF J CYLBLADE I HUBF I HUBT vw Fan_z114 2 J Entire Substructure v Set All On Set All OFF OK Cancel Figure 4 2 Select Substructure Sets dialog box Abaqus CAE Usage All modules File Import Part File Filter Substructure select sim file Step module Output Field Output Requests Create Domain Substructure Step Create Procedure type Linear perturbation Substructure generation Load module BC Create Mechanical Retained nodal dofs References Abaqus Analysis User s Manual e Substructuring Section 1
65. hey are invoked through the Abaqus execution procedure the driver The translators and the commands to invoke them are described below abaqus fromansys translates an ANSYS input file to an Abaqus input file abaqus fromnastran translates a Nastran bulk data file to an Abaqus input file abaqus frompamcrash translates a PAM CRASH input file to a partial Abaqus input file abaqus fromradioss translates a RADIOSS input file to a partial Abaqus input file abaqus tonastran translates an Abaqus input file to Nastran bulk data file format abaqus toOutput2 translates an Abaqus output database file to the Nastran Output file format abaqus tozaero enables you to exchange aeroelastic data between the Abaqus and ZAERO analysis products Other utilities e Additional programs are included with the release They are all invoked through the Abaqus execution procedure the driver The utilities and the commands to invoke these programs are described below abaqus append joins separate results files into a single file abaqus ascfil translates Abaqus results files between ASCII and binary formats which is useful for moving results files between different computer types abaqus doc accesses the Abaqus documentation collection using a web browser INTRODUCTION TO Abaqus 6 10 EF abaqus encrypt creates an encoded password protected version of an Abaqus input file while abaqus decrypt converts an encrypted file back into its original unencoded
66. hich is a two equation model based on renormalization group theory that accounts for the effects of small scales of motion New RNG k epsilon turbulence model for fluid dynamic analysis Section 6 3 e Modeling enhancements in Abaqus CAE include the option to mirror a part and retain the complete feature creation history and the ability to edit those features Adding a mirror feature to a part Section 4 5 e Material calibration which is the process of deriving Abaqus material behaviors from sets of material test data can now be performed in Abaqus CAE to derive linear isotropic elasticity and isotropic plasticity without hardening material behaviors Material calibration Section 7 1 e Mesh stack orientation enhancements including assigning a stack direction based on the orientation of a reference face and assigning stack orientations that are independent of the sweep direction are now available in Abaqus CAE Mesh stack orientations Section 12 2 INTRODUCTION TO Abaqus 6 10 EF e Several enhancements are available for visualizing results Streamlines can be used to visualize the velocity and vorticity of fluid flow in an Abaqus CFD analysis Streamlines Section 13 2 New options for probing the model offer more customization and improve usability Enhanced query options for probing the model Section 13 5 Abaqus 6 10 EF general release products are available on DVD ROM Limited
67. hread parallel execution of the AMS eigensolver delivers significant performance improvement on shared memory computers and on a single node of a computer cluster Table 6 1 illustrates the improved performance of the AMS eigensolver on a system with Intel Nehalem processors for two industrial models Model 1 is a 4 3 million degree of freedom automotive powertrain model with a large selective recovery node set and damping projection and Model 2 is a 9 2 million degree ANALYSIS PROCEDURES of freedom automotive vehicle model with a large selective recovery node set The wall clock times in the table indicate the total elapsed times for the frequency extraction step using the AMS eigensolver Table 6 1 AMS performance improvement due to a new scalable thread parallel execution capability Degrees of Abaqus 6 10 1 core Abaqus 6 10 EF 4 core Model Freedom Millions Number of Wall Clock Number of Wall Clock Time Modes Time h mm Modes h mm Model 1 4 3 1709 1 02 1710 0 29 Model 2 9 2 4208 2 00 4210 1 03 Large scale models specifying full recovery of eigenmodes may require a considerable amount of physical memory to avoid extra I O operations which may lead to a degradation of parallel scaling Due to this enhancement and the approximate nature of the AMS technology it is possible to observe slight differences in the number of eigenmodes extracted by AMS in Abaqus 6 10 EF versus Abaqus 6 10 These diffe
68. ide the force or moment values next to each free body vector In addition you can still display free body data on a view cut while you are working with a symbol plot of free body nodal forces Abaqus CAE Usage Visualization module Result Field Output Symbol Variable FREEBODY Reference Abaqus CAE User s Manual e Producing a symbol plot of free body nodal forces Section 44 4 in the online HTML version of this manual 13 5 Enhanced query options for probing the model Product Abaqus CAE Benefits You can now probe a model plot for all of the direct components of a tensor variable or for all of the principal components of a vector variable rather than for just the selected component In addition you can now specify multiple labels at the same time when you add nodes or elements to a query by their labels and you can probe a model plot for nodes or elements from a particular display group These enhancements improve usability and offer more customization options for probing values in a model Description The probe functionality includes the following enhancements e You can now launch the Probe Values dialog box more quickly by clicking the new Sg button in the Visualization module toolbox e The Probe Values dialog box now enables you to display all of the component values for a tensor or vector variable and to write these values to a file Figure 13 5 shows the probe functionality displaying all of the direct compon
69. ies and includes cross references to more detailed information Chapter 16 Summary of changes summarizes in tabular format the changes to Abaqus elements keyword options user subroutines and output variable identifiers 1 1 Key features of Abaqus 6 10 EF This section provides brief descriptions of some of the most significant new capabilities and enhancements available in the Abaqus 6 10 Extended Functionality release refer to the table of contents for a complete list of new features 1 1 5 INTRODUCTION TO Abaqus 6 10 EF e Pressure penetration loading including support in Abaqus CAE is now available for three dimensional models Three dimensional pressure penetration loading Section 9 1 e You can now use Abaqus CAE to create substructures to import substructures into your model database to add substructures to your assembly and to recover substructure output data during an analysis Substructures in Abaqus CAE Section 4 1 e Enhancements to the extended finite element method XFEM include support for a user defined damage initiation criterion and for simulation of low cycle fatigue using XFEM and the direct cyclic approach Continued enhancements to the XFEM based crack propagation capability Section 6 2 e You can obtain improved accuracy for modeling contact interactions with gasket elements Penalty stiffness for contact involving gaskets Section 11 2 e Contact stress output is more ac
70. inite element analysis program includes all analysis capabilities except nonlinear dynamic analysis using explicit time integration provided in the Abaqus Explicit program computational fluid dynamics capabilities and the add on analysis functionality described below 5 INTRODUCTION TO Abaqus 6 10 EF e Abaqus Explicit This product provides nonlinear transient dynamic analysis of solids and structures using explicit time integration Its powerful contact capabilities reliability and computational efficiency on large models also make it highly effective for quasi static applications involving discontinuous nonlinear behavior e Abaqus CFD This product is a computational fluid dynamics program with extensive support for preprocessing simulation and postprocessing in Abaqus CAE Abaqus CFD provides scalable parallel CFD simulation capabilities to address a number of nonlinear coupled fluid thermal and fluid structural problems Preprocessing and postprocessing e Abaqus CAE This product is a Complete Abaqus Environment that provides a simple consistent interface for creating submitting monitoring and evaluating results from Abaqus simulations Abaqus CAE is divided into modules where each module defines a logical aspect of the modeling process for example defining the geometry defining material properties generating a mesh submitting analysis jobs and interpreting results e Abaqus Viewer This subset of Abaqus CAE contains
71. install the software 5 DOCUMENTATION Any person that has valid access to your computer or internal network may copy and use the documentation for your internal reference purposes Export Restrictions The software is subject to United States export laws and regulations You must comply with all domestic and international export laws and regulations that apply to the software These laws include restrictions on destinations end users and end use For additional information see www microsoft com exporting 7 SUPPORT SERVICES Because this software is as is we may not provide support services for it 8 Entire Agreement This agreement and the terms for supplements updates Internet based services and support services that you use are the entire agreement for the software and support services 9 Applicable Law a United States If you acquired the software in the United States Washington state law governs the interpretation of this agreement and applies to claims for breach of it regardless of conflict of laws principles The laws of the state where you live govern all other claims including claims under state consumer protection laws unfair competition laws and in tort b Outside the United States If you acquired the software in any other country the laws of that country apply 10 Legal Effect This agreement describes certain legal rights You may have other rights under the laws of your country You may also have right
72. k epsilon turbulence model for fluid dynamic analysis 6 3 CONTENTS 10 11 12 13 Enhancements to coupled structural acoustic analysis AMS eigensolver performance improvement Enhanced iterative solver capability to handle dense linear constraints Defining a spectrum using values of Sas a function of frequency and damping in Abaqus CAE Creating a spectrum from a user specified amplitude in Abaqus Standard New modal and directional summation methods for response spectrum analysis Using uncoupled eigenmodes to generate a coupled acoustic structural substructure Materials Material calibration Elements New linear pore pressure elements Tapered beams and improved mass formulation New 6 node triangular prism for fluid flow problems Prescribed conditions Three dimensional pressure penetration loading Changing the coordinate system for symmetry boundary conditions Total force distribution option for pressure loads Specifying the source and target regions for temperature mapping Explicit dynamics analysis using Abaqus Aqua Constraints Automatic shell to solid coupling constraints Improvement to coupling definition Interactions Contact stress output improvements Penalty stiffness for contact involving gaskets Edge to edge general contact enhancement Meshing Tetrahedral meshing enhancements Mesh stack orientations Output and visualization Output database size reduction Streamlines 6 4 6 5 6 6 6
73. le named oldnumeric which replicates all of the functionality in the deprecated library To use the functions previously available in Numeric issue the following command from a command prompt or from the CLI in Abaqus CAE gt gt import numpy oldnumeric as Numeric For more information about the numpy module see numpy scipy org The upgradeScript utility that upgrades your Python scripts for the new functionality in Abaqus will also account for this mathematical library change 15 2 SUMMARY OF CHANGES 16 Summary of changes This section summarizes the changes and the additions that have been made to the items that define an Abaqus model including elements keywords user subroutines and output variables For more information on these modifications refer to the preceding chapters The following identifiers are used new New in Abaqus 6 10 EF mod Existed in Abaqus 6 10 but has been modified or enhanced in Abaqus 6 10 EF rem Existed in Abaqus 6 10 but has been removed in Abaqus 6 10 EF S New modified or removed in Abaqus Standard E New modified or removed in Abaqus Explicit C New modified or removed in Abaqus CFD 16 1 Changes in Abaqus elements This section summarizes the changes and the additions that have been made to the elements that can be used in an Abaqus model new S C3D4P 4 node linear coupled pore pressure element new S C3D6P 6 node linear coupled pore pressure element new C FC3D
74. ly 0 00 A 0 03 Strain Cancel Figure 7 1 Defining an isotropic elastic plastic material calibration behavior Abaqus CAE Usage Property module Model Tree Calibrations container Reference Abaqus CAE User s Manual e Creating material calibrations Section 12 16 in the online HTML version of this manual ELEMENTS 8 Elements This chapter discusses elements available in Abaqus It provides an overview ofthe following enhancements e New linear pore pressure elements Section 8 1 e Tapered beams and improved mass formulation Section 8 2 e New 6 node triangular prism for fluid flow problems Section 8 3 8 1 New linear pore pressure elements Products Abaqus Standard Abaqus CAE Benefits The pore pressure element library in Abaqus Standard now includes both linear tetrahedral C3D4P and linear wedge C3D6P elements These elements add modeling flexibility for coupled pore pressure displacement analyses Description Pore pressure elements are provided in Abaqus Standard for modeling fully or partially saturated fluid flow through a deforming porous medium These two new elements support all of the loadings material behaviors and contact interactions supported by existing pore pressure elements Abaqus CAE Usage Mesh module Mesh Element Type Family Pore Fluid Stress References Abaqus Analysis User s Manual e Coupled pore fluid diffusion and stress analysis
75. ly spherical surface SSOOH VNOHARAAH OUNOROWONNO UA0Cf DOS 00 00 8 8 010107 01 BR O0 J NO O1 O BR Prior versions CPRESS CPRESS 80 0 124 2 73 3 80 0 66 7 73 3 60 0 66 7 53 3 60 0 46 7 53 3 40 0 46 7 33 3 40 0 26 7 33 3 20 0 26 7 13 3 20 0 6 7 13 3 0 0 6 7 0 0 Prior versions Figure 11 2 Reduced CPRESS solution noise across versions for a coarsely meshed nut Benefits You can now obtain improved accuracy for modeling contact interactions with gasket elements Description The algorithm to automatically assign contact penalty stiffness now accounts for stiffening of underlying gasket elements upon compression if thickness direction gasket material behavior is specified directly This change will typically result in better resolution of contact conditions for cases in which the penalty or augmented Lagrange methods are used to enforce contact constraints at interfaces involving gaskets If you have existing models that employ scale factors to adjust the penalty stiffness at such interfaces these 11 2 INTERACTIONS scale factors are likely no longer needed and may degrade convergence behavior you should try removing these scale factors when using the new stiffness algorithm References Abaqus Analysis User s Manual e Defining the thickness direction behavior of the gasket in Defining the gasket behavior directly using a gasket behavior model
76. ments to a probe by keying in their IDs Abaqus CAE now enables you to specify a list of comma separated IDs at the same time e You can now probe values from all the nodes or elements in a particular display group If you choose Select a display group and specify one of the display groups in your session Abaqus CAE adds rows to the data table for all the nodes or elements in that display group e You can create a new display group using the group of nodes or elements in the data table by clicking mouse button 3 in the data table and selecting Create Display Group Abaqus CAE Usage Visualization module Click from the toolbox Select a display group and Components Reference Abaqus CAE User s Manual e Using the Query toolset to probe the model Section 50 2 in the online HTML version of this manual 13 6 Controlling plot state and Field Output toolbar synchronization Product Abaqus CAE 13 8 OUTPUT AND VISUALIZATION Benefits You can now control whether the plot state in the current viewport should be synchronized with the field output variable selections in the Field Output toolbar This enhancement provides greater flexibility for display of results data Description The Field Output toolbar now includes the Synchronize Plot State tool By default this tool is toggled on and Abaqus CAE changes the plot state automatically if you select a new variable from the toolbar that would require a change of plot state in the
77. modal and directional summation methods for response spectrum analysis comply with the latest regulations and conform to the ASCE 4 98 standard for Seismic Analysis of Safety Related Nuclear Structures and Commentary Description Two new modal summation methods for response spectrum analysis are now available the double sum combination DSC method and the grouping GRP method The double sum combination method is the first attempt to evaluate modal correlation based on random vibration theory The grouping method improves the response estimation for structures with closely spaced eigenvalues Two new directional summation methods for response spectrum analysis are now available the 40 R40 method and the 30 R30 method These methods use the rules recommended in the ASCE 4 98 standard to combine the response for all possible combinations of the three components including variations in sign plus minus assuming that when the maximum response from one component occurs the response from the other two components is 40 or 30 of their maximum value Abaqus CAE Usage Step module Step Create Linear perturbation Response spectrum Excitations Multiple direction thirty percent rule or Multiple direction forty percent rule Summations Double sum combination or Grouping method References Abaqus Analysis User s Manual e Response spectrum analysis Section 6 3 10 Abaqus CAE User s Manual e Configuring a response sp
78. multiphysics solutions for insight into challenging engineering problems and lifecycle management solutions for managing simulation data processes and intellectual property By building on established technology respected quality and superior customer service SIMULIA makes realistic simulation an integral business practice that improves product performance reduces physical prototypes and drives innovation Headquartered in Providence RI USA with R amp D centers in Providence and in Velizy France SIMULIA provides sales services and support through a global network of regional offices and distributors For more information visit www simulia com About Dassault Syst mes As a world leader in 3D and Product Lifecycle Management PLM solutions Dassault Syst mes brings value to more than 100 000 customers in 80 countries A pioneer in the 3D software market since 1981 Dassault Systemes develops and markets PLM application software and services that support industrial processes and provide a 3D vision of the entire lifecycle of products from conception to maintenance to recycling The Dassault Systemes portfolio consists of CATIA for designing the virtual product SolidWorks for 3D mechanical design DELMIA for virtual production SIMULIA for virtual testing ENOVIA for global collaborative lifecycle management and 3DVIA for online 3D lifelike experiences Dassault Systemes shares are listed on Euronext Paris 13065 DSY PA and Dassault Syst
79. n 13 8 13 1 Output database size reduction Products Abaqus Standard Abaqus Explicit Abaqus CAE Benefits A new scheme was implemented as an option in Abaqus Standard to reduce the size of the output database for extrapolation and interpolation of three commonly used output variables stress components Mises equivalent stress and equivalent pressure stress In addition in Abaqus Standard and Abaqus Explicit you can now easily request output on the exterior nodes and elements Description The extrapolation and interpolation schemes were changed in Abaqus Standard for three commonly used output variables stress Mises equivalent stress and equivalent pressure stress to reduce the size of the output database In the old scheme extrapolation or interpolation was performed after the analysis finished and required storage of stresses at integration points In the new scheme the extrapolation or interpolation is performed as soon as the results are available during the analysis and only the results at the requested locations are written to the output database The new scheme is invoked automatically when output is requested for any of the supported variables In the case of Mises equivalent stress and equivalent pressure stress the new output variables MISESONLY and PRESSONLY must be used If output variables MISES and PRESS are used instead the old scheme is invoked In addition an enhancement was implemented in both Abaqus Standard and Abaqus
80. nce Abaqus Analysis User s Manual e Parallel execution in Abaqus Standard Section 3 5 2 MODELING 4 Modeling This chapter discusses features related to creating your model such as node and element definition in Abaqus Standard or Abaqus Explicit and part and assembly definition in Abaqus CAE It provides an overview of the following enhancements e Substructures in Abaqus CAE Section 4 1 e Application of fluid cavity pressure on the fluid exchange surface Section 4 2 e Enhancements to the offset extend and blend face tools Section 4 3 e Creating a wire from edge feature Section 4 4 e Adding a mirror feature to a part Section 4 5 e Diagnostics for modeling errors associated with mass properties Section 4 6 e Thickness and material orientation distributions for membrane elements and sections Section 4 7 e Composite layer thickness distribution for shell elements Section 4 8 4 1 Substructures in Abaqus CAE Product Abaqus CAE Benefits Abaqus CAE now supports substructure generation usage and recovery These enhancements expand the scope of modeling capabilities in Abaqus CAE and enable you to perform analyses with improved performance Description Abaqus CAE now enables you to create substructures import them into your model database add them to your assembly and recover their output data during an analysis The enhancements fall into three categories s
81. nctionality Maintenance Deliveries are software updates that address known issues but generally do not introduce enhancements or new functionality Abaqus Extended Functionality Releases provide early access to a subset of the new functionality that will be introduced in the next numbered Release Consistent with the format used by other Dassault Syst mes brands for designating releases Abaqus Software is designated by Version and Release as Abaqus 6 n Abaqus 6 n is not a new Version but is a new Release Similarly Abaqus 6 n 3 refers to Version 6 Release n Maintenance Delivery 3 When the Abaqus Maintenance Delivery number is omitted in written communications the reference is interpreted to mean the general release which is referenced in the code as Abaqus 6 n 1 Extended Functionality Releases are designated by an EF suffix after the Release number This documentation and the software described in this documentation are subject to change without prior notice No part of this documentation may be reproduced or distributed in any form without prior written permission of Dassault Syst mes or its subsidiary The Abaqus Software is a product of Dassault Syst mes Simulia Corp Providence RI USA Dassault Syst mes 2010 Abaqus the 3DS logo SIMULIA CATIA and Unified FEA are trademarks or registered trademarks of Dassault Syst mes or its subsidiaries in the United States and or other countries Other company product and service names m
82. neral changes to the Abaqus interface e Chapter 3 Execution commands and utilities for running any of the Abaqus products e Chapter 4 Modeling features related to creating your model such as node and element definition in Abaqus Standard or Abaqus Explicit and part and assembly definition in Abaqus CAE e Chapter 5 Model import and export features related to importing and exporting parts assemblies and models to or from Abaqus CAE e Chapter 6 Analysis procedures features related to defining an analysis e Chapter 7 Materials new material models or changes to existing material models e Chapter 8 Elements new elements or changes to existing elements e Chapter 9 Prescribed conditions loads boundary conditions and predefined fields e Chapter 10 Constraints kinematic constraints e Chapter 11 Interactions features related to contact and interaction modeling e Chapter 12 Meshing features related to meshing your model e Chapter 13 Output and visualization obtaining postprocessing and visualizing results from Abaqus analyses e Chapter 14 User subroutines utilities and plug ins additional user programs that can be run with Abaqus e Chapter 15 Abaqus Scripting Interface using the Abaqus Scripting Interface to write user scripts Each entry in these chapters clearly indicates the Abaqus product or products to which the feature appl
83. ng models in OBJ format Section 5 1 e Improved import and translation of membrane data from Nastran models Section 5 2 5 1 Exporting models in OBJ format Product Abaqus CAE Benefits Wavefront OBJ is an open file format for geometry definition and visualization that is supported by many three dimensional graphics applications You can now export geometry and mesh data from an Abaqus CAE model database to OBJ format which enables you to display your Abaqus CAE data in a variety of CAD and visualization programs Description Abaqus CAE now supports export of model data in OBJ format When you export data from the Visualization module Abaqus CAE exports only mesh data to the OBJ format file If you export data from any other module Abaqus CAE exports mesh data if the mesh is displayed in the current viewport otherwise geometry data are exported Export of data from the Visualization module is also sensitive to the current step and frame If you display an undeformed plot in the viewport Abaqus CAE exports undeformed data to the OBJ format file if you display a deformed plot Abaqus CAE exports deformed data for the current step and frame to the OBJ format file Abaqus CAE Usage All modules File Export OBJ Reference Abaqus CAE User s Manual e Exporting viewport data to an OBJ format file Section 10 9 6 in the online HTML version of this manual 5 2 Improved import and translation of membrane data from N
84. ng process and improves performance for models with a significant amount of element property variation 4 8 MODELING Description In Abaqus Standard you can now define material orientations and thickness for membrane elements using distributions These enhancements allow you to minimize the number of section definitions needed for a model that has significant variation of these features which can lead to performance improvements during pre and postprocessing In Abaqus CAE you can now use an analytical field or an element based discrete field to define the spatially varying membrane thickness as shown in Figure 4 6 TT x Name Section 1 Type Membrane Material Pe Thickness Membrane thickness value a x Element distribution gt Section Poisson s ratio Use analysis default Specify value Options e _ Figure 4 6 Using element distributions for membrane thickness Abaqus CAE Usage Property module Section Create Category Shell Type Membrane Membrane thickness Element distribution References Abaqus Analysis User s Manual e Orientations Section 2 2 5 e Distribution definition Section 2 7 1 e Membrane elements Section 26 1 1 Abaqus CAE User s Manual e Creating membrane sections Section 12 12 7 in the online HTML version of this manual 4 9 MODELING Abaqus Keywords Reference Manual e DISTRIBUTION e M
85. oint loads and concentrated moments including loads imported using the CF co simulation field ID 16 6 mod S mod S mod S new C new C SUMMARY OF CHANGES CFF Concentrated fluid flow at a node including those imported using the CFLOW co simulation field ID CFL All concentrated flux values including those imported using the CFL co simulation field ID NT All temperature values at a node including those imported using the TEMP co simulation field ID TURBEPS Energy dissipation rate TURBKE Turbulent kinetic energy Element face variables mod S P Uniformly distributed pressure load on element faces including those imported using the PRESS co simulation field ID 16 7 PRODUCT INDEX Product Index Abaqus Standard Section 3 1 Parallel ordering for the direct sparse solver Section 3 2 Thread parallel element and contact search calculations for transient fidelity dynamic analyses Section 3 3 Parallel support for Abaqus Standard to Abaqus Standard import Section 3 4 Parallel support for Abaqus Standard co simulation Section 4 6 Diagnostics for modeling errors associated with mass properties Section 4 7 Thickness and material orientation distributions for membrane elements and sections Section 5 2 Improved import and translation of membrane data from Nastran models Section 6 2 Continued enhancements to the XFEM based crack propagation capability Section 6 4 Enhancements to coupled st
86. only the postprocessing capabilities of the Visualization module It uses the output database odb to obtain results from the analysis products The output database is a neutral binary file Therefore results from an Abaqus analysis run on any platform can be viewed on any other platform supporting Abaqus Viewer It provides deformed configuration contour vector and X Y plots as well as animation of results Add on analysis e Abaqus Aqua This add on analysis capability for Abaqus Standard and Abaqus Explicit provides a capability for calculating drag and buoyancy loads based on steady current wave and wind effects for modeling offshore piping and floating platform structures Abaqus Aqua is applicable for structures that can be idealized using line elements including beam pipe and truss elements e Abaqus Design This add on analysis capability for Abaqus Standard allows the user to perform design sensitivity analysis DSA The derivatives of output variables are calculated with respect to specified design parameters e Abaqus Foundation This analysis option offers more efficient access to the linear static and dynamic analysis functionality in Abaqus Standard e CZone for Abaqus This add on capability for Abaqus Explicit provides access to a state of the art methodology for crush simulation based on CZone technology from Engenuity Ltd Targeted toward the design of composite components and assemblies CZone for Abaqus provides f
87. or inclusion of material crush behavior in simulations of composite structures subjected to impact INTRODUCTION TO Abaqus 6 10 EF Optional analysis functionality e Abaqus AMS This add on analysis capability for Abaqus Standard allows the user to select the automatic multi level substructuring AMS eigensolver when performing a natural frequency extraction e Co simulation with MpCCI This add on analysis capability for Abaqus can be used to solve multiphysics problems by coupling Abaqus with any third party analysis program that supports the MpCCI interface e Co simulation with MADYMO This add on analysis capability for Abaqus Explicit can be used to perform vehicle occupant crash safety simulations by coupling Abaqus Explicit with MADYMO Interfaces e Abaqus Interface for Moldflow This optional interface translates finite element model information from a Moldflow analysis to an Abaqus input file e Abaqus Interface for MSC ADAMS This optional interface allows Abaqus finite element models to be included as flexible components within the MSC ADAMS family of products The interface is based on the component mode synthesis formulation of ADAMS Flex Specifically flexibility data from Abaqus superelements are translated to the modal neutral mn file format required by the ADAMS Flex product Although the ADAMS Flex interface supports only linear flexibility data the Abaqus user may include an arbitrary number of preloading steps be
88. ou can now add a mirror feature to a part The mirror feature retains the complete feature history of the part and you can select any planar face or datum plane as the mirror plane Description The new mirror feature is similar to the existing mirror option available when you copy a part However the mirror feature has three advantages over a copied part e You can still edit all the other part features e You can select any planar face or datum plane as the mirror plane e You can keep or delete the original geometry and any internal boundaries between the original and the mirror image In contrast copying a part with the mirror option compresses the features so the original features are no longer available to edit Using the mirror option while copying a part also allows you to mirror the part only about the principal planes Figure 4 5 shows an original part with the mirror plane highlighted and the resulting mirror features when the original geometry is kept The center image is the result with internal boundaries and the right image is the result without internal boundaries Figure 4 5 Mirror features with and without internal boundaries 4 7 MODELING Mirror features can be deleted suppressed and resumed Since you create them by making selections from the viewport mirror features have no editable parameters Abaqus CAE Usage Part module Shape Transform Mirror Reference Abaqus CAE User s Manual e Mirroring a pa
89. parallel execution of additional calculations provides improved performance for many dynamic analyses Description Dynamic analyses with transient fidelity application settings now execute element and contact search calculations with thread based parallelization among processors of a compute node which is similar to the existing behavior for moderate dissipation and quasi static application settings In previous Abaqus releases these calculations were performed on only one processor per compute node 3 1 EXECUTION Reference Abaqus Analysis User s Manual e Parallel execution in Abaqus Standard Section 3 5 2 3 3 Parallel support for Abaqus Standard to Abaqus Standard import Product Abaqus Standard Benefits Abaqus Standard to Abaqus Standard import analyses can now benefit from MPI based parallelization Description MPI based parallel Abaqus Standard to Abaqus Standard import analyses are now supported Reference Abaqus Analysis User s Manual e Parallel execution in Abaqus Standard Section 3 5 2 3 4 Parallel support for Abaqus Standard co simulation Product Abaqus Standard Benefits Abaqus Standard analyses that use the co simulation technique can now benefit from MPI based parallelization Description Abaqus Standard co simulation analyses can be executed using MPI based parallelization For example this new feature will benefit your Abaqus Standard to Abaqus Explicit co simulation Refere
90. pe Symmetry Antisymmetry Encastre CSYS select other coordinate system PRESCRIBED CONDITIONS Reference Abaqus CAE User s Manual e Defining a symmetry antisymmetry encastre boundary condition Section 16 10 1 in the online HTML version of this manual 9 3 Total force distribution option for pressure loads Product Abaqus CAE Benefits When defining pressure loads you can choose the new total force option for the load distribution This allows you to simply enter the total magnitude of pressure applied over the surface In previous releases using the uniform distribution option it was necessary to query the faces of the surface to find the total area and then divide the total force by the surface area With the new total force option you can simply enter the total magnitude of pressure applied over the entire surface Description When modeling a pressure load you usually know the total force that will be applied to a face or surface of the model In previous releases of Abaqus CAE this number had to be divided by the surface area before entering it into the Magnitude field of the Edit Load dialog box using the existing Uniform option for Distribution Now with the Total Force option shown in Figure 9 3 you can directly enter the total magnitude of the pressure Abaqus CAE Usage Load module Load Create Category Mechanical Type Pressure select surfaces Distribution Total Force Reference Abaqus CAE Use
91. plitude xi Name Amp 1 Type Spectrum Method Define Specification units Displacement gt Magnitude Frequency 1 2 EEE F Cut Copy amp Paste Insert Row Before OK Insert Row After Cancel X Delete Rows Clear Contents Clear Table ead From File Create xY Data Figure 6 1 Reading spectrum data from a file 6 8 Creating a spectrum from a user specified amplitude in Abaqus Standard Product Abaqus Standard Benefits The ability to create a spectrum from a user specified amplitude that describes a dynamic event simplifies the conversion process Description When performing a response spectrum analysis you must first convert the dynamic event into a spectrum Abaqus Standard allows you to create a spectrum automatically from a given dynamic event that is supplied in the form of a user defined time domain amplitude record You can build a displacement velocity or acceleration spectrum for a number of provided damping values The spectrum that you create can be used in a subsequent response spectrum analysis or it can be written to an external file for future use References Abaqus Analysis User s Manual e Response spectrum analysis Section 6 3 10 ANALYSIS PROCEDURES Abaqus Keywords Reference Manual e SPECTRUM 6 9 New modal and directional summation methods for response spectrum analysis Products Abaqus Standard Abaqus CAE Benefits The new
92. previous module or next module with a single click Similar arrows are added to all other lists that appear on the context bar Module Jz Part w Model E Mode 1 Part Hinge solid Y Figure 2 1 List navigation in the context bar Reference Abaqus CAE User s Manual e The context bar Section 2 2 4 2 3 Copying step dependent objects to a different step Product Abaqus CAE Benefits When copying a step dependent object such as a load or boundary condition you can now choose a different destination step for the copied object This enhancement improves usability and saves time when working with multistep analyses in Abaqus CAE Description Using the Abaqus CAE object manager dialog boxes menu commands or Model Tree you can copy loads boundary conditions interactions predefined fields output requests or adaptive mesh constraints In previous releases of Abaqus CAE these objects could only be copied into the same step You can now choose another valid step of the analysis as the destination for the copied object as shown in Figure 2 2 a GENERAL ENHANCEMENTS Ere x Copy LiteLoad to Step Contact v Cancel Figure 2 2 Copying objects to another step Abaqus CAE Usage Various modules Load Manager Boundary Condition Manager Interaction Manager Predefined Field Manager Field Output Requests Manager History Output Requests Manager or ALE Adaptive Mesh Constraint Manager
93. r s Manual e Defining a pressure load Section 16 9 3 in the online HTML version of this manual 9 4 Specifying the source and target regions for temperature mapping Products Abaqus Standard Abaqus Explicit Benefits When temperature fields are interpolated from a previous analysis you can now specify the source region from where the temperatures are read and the target region onto where the temperatures are mapped This new feature eliminates the ambiguity in temperature assignment for cases in which free surfaces in a heat transfer analysis are very close or touching Description When mapping prior analysis temperatures to a node in a current analysis the general interpolation function searches for a parent element from the previous analysis that encloses or is the closest PRESCRIBED CONDITIONS EXP x Name PressureLoad 4 Type Pressure Step Load Static General Region Picked Dee nom rfi Magnitude Total Force Amplitude Hydrostatic User defined Figure 9 3 Total force distribution option for pressure loads to the node In a heat transfer analysis temperatures may vary significantly on two surfaces that are close or touching but on separate parts In such a case the parent element might be found in either of the adjacent parts resulting in an ambiguous temperature definition for a node on the surfaces You can now eliminate this ambiguity by specifying the source and target int
94. r model information between Pro ENGINEER and Abaqus CAE Modifications to the 5 INTRODUCTION TO Abaqus 6 10 EF model in Pro ENGINEER can be propagated to the Abaqus CAE model without affecting any analysis features such as loads or boundary conditions that were defined on the model in Abaqus CAE and certain geometric modifications can be made in Abaqus CAE and propagated to the model in Pro ENGINEER e NX Associative Interface This add on capability for Abaqus CAE creates a connection between an NX session and an Abaqus CAE session This connection can be used to transfer model data and to propagate design changes between NX and Abaqus CAE The NX Associative Interface can be purchased and downloaded from Elysium Inc www elysiuminc com e Geometry Translator for CATIA V4 This add on capability allows the user to import the geometry of CATIA V4 format parts and CATIA V4 assemblies model catdata and exp files directly into Abaqus CAE e Geometry Translator for I DEAS This translator plug in for I DEAS generates a geometry file using the Elysium Neutral File enf or Elysium Neutral Assembly File eaf format which can be imported into Abaqus CAE e Geometry Translator for Parasolid This add on capability allows the user to import the geometry of Parasolid format parts and Parasolid assemblies x_t x_b and xmt files directly into Abaqus CAE Translator utilities e Abaqus translators are provided with the release T
95. rences are expected since AMS eigenmodes close to the user specified maximum frequency are generally less accurate and more sensitive to perturbations e g changes in the order of the system of equations However the results of subsequent modal dynamic procedures are very close to the results in Abaqus 6 10 and previous releases if an appropriate number of modes are used to construct the projection basis References Abaqus Analysis User s Manual e Natural frequency extraction Section 6 3 5 Abaqus Keywords Reference Manual e FREQUENCY 6 6 Enhanced iterative solver capability to handle dense linear constraints Product Abaqus Standard Benefits The iterative solver algorithm offers improved handling of dense linear constraints to better achieve convergence Description The iterative solver can now achieve better convergence for models that include dense linear constraint equations such as multi point constraints surface based tie constraints kinematic couplings etc ANALYSIS PROCEDURES that eliminate a large number of slave degrees of freedom per master degree of freedom and or eliminate some slave degrees of freedom in favor of a large number of master degrees of freedom Previously in Abaqus 6 10 dense linear constraints would often lead to non convergence of the iterative solver In the current release the iterative solver has a new treatment for dense linear constraints to better achieve convergence If a mo
96. rt Section 11 28 in the online HTML version of this manual 4 6 Diagnostics for modeling errors associated with mass properties Product Abaqus Standard Benefits New diagnostics help you to avoid mistakes in specifying inertia properties in a dynamic model Description Abaqus Standard issues an error message by default if the global mass matrix is singular for dynamics models with an application type setting of transient fidelity The global mass matrix is affected by material densities concentrated masses and rotary inertias and nonstructural mass A singular global mass matrix is most commonly due to omitting specification of inertia properties A warning message is also issued if a density definition is omitted for any materials in a dynamic analysis Other more subtle causes of a singular global mass matrix include the density being zero for certain values of temperature or field variables and unconstrained degrees of freedom at massless nodes that are connected to other nodes by constraints References Abaqus Analysis User s Manual e Implicit dynamic analysis using direct integration Section 6 3 2 Abaqus Keywords Reference Manual e DYNAMIC 4 7 Thickness and material orientation distributions for membrane elements and sections Products Abaqus Standard Abaqus CAE Benefits Using distributions to specify spatially varying thicknesses and material orientations on membrane elements greatly simplifies the modeli
97. ructural acoustic analysis Section 6 5 AMS eigensolver performance improvement Section 6 6 Enhanced iterative solver capability to handle dense linear constraints Section 6 7 Defining a spectrum using values of S as a function of frequency and damping in Abaqus CAE Section 6 8 Creating a spectrum from a user specified amplitude in Abaqus Standard Section 6 9 New modal and directional summation methods for response spectrum analysis Section 6 10 Section 8 1 Section 8 2 Section 9 1 Section 9 4 Section 10 2 Section 11 1 Section 11 2 Section 13 1 Section 14 1 Section 15 2 Using uncoupled eigenmodes to generate a coupled acoustic structural substructure New linear pore pressure elements Tapered beams and improved mass formulation Three dimensional pressure penetration loading Specifying the source and target regions for temperature mapping Improvement to coupling definition Contact stress output improvements Penalty stiffness for contact involving gaskets Output database size reduction Defining damage initiation criterion via user subroutine UDMGINI Support for NumPy library for Python in Abaqus Abaqus Explicit Section 4 2 Application of fluid cavity pressure on the fluid exchange surface Section 4 8 Composite layer thickness distribution for shell elements Section 5 2 Improved import and translation of membrane data from Nastran models Section 6 1 Change in default element stable time estimation for three dimensional con
98. s with respect to the party from whom you acquired the software This agreement does not change your rights under the laws of your country if the laws of your country do not permit it to do so 11 Disclaimer of Warranty The software is licensed as is You bear the risk of using it Microsoft gives no express warranties guarantees or conditions You may have additional consumer rights under your local laws which this agreement cannot change To the extent permitted under your local laws Microsoft excludes the implied warranties of merchantability fitness for a particular purpose and non infringement 12 Limitation on and Exclusion of Remedies and Damages You can recover from Microsoft and its suppliers only direct damages up to U S 5 00 You cannot recover any other damages including consequential lost profits special indirect or incidental damages This limitation applies to anything related to the software services content including code on third party Internet sites or third party programs and e claims for breach of contract breach of warranty guarantee or condition strict liability negligence or other tort to the extent permitted by applicable law It also applies even if Microsoft knew or should have known about the possibility of the damages The above limitation or exclusion may not apply to you because your country may not allow the exclusion or limitation of incidental consequential or other damages Please note As
99. select object Copy Step destination step Reference Abaqus CAE User s Manual e Copying step dependent objects using manager dialog boxes Section 3 4 11 in the online HTML version of this manual EXECUTION 3 Execution This chapter discusses commands and utilities for running the Abaqus products It provides an overview of the following enhancements e Parallel ordering for the direct sparse solver Section 3 1 e Thread parallel element and contact search calculations for transient fidelity dynamic analyses Section 3 2 e Parallel support for Abaqus Standard to Abaqus Standard import Section 3 3 e Parallel support for Abaqus Standard co simulation Section 3 4 3 1 Parallel ordering for the direct sparse solver Product Abaqus Standard Benefits The parallel ordering procedure for the direct sparse solver has been improved to give higher quality orderings resulting in improved solver performance Description The parallel ordering procedure for the direct sparse solver has been improved to generate higher quality orderings for improved solver performance The procedure will now run on multiple host machines in a cluster configuration Reference Abaqus Analysis User s Manual e Parallel execution in Abaqus Standard Section 3 5 2 3 2 Thread parallel element and contact search calculations for transient fidelity dynamic analyses Product Abaqus Standard Benefits Thread
100. shell to solid coupling constraints Section 15 15 6 in the online HTML version of this manual e Understanding midsurface modeling Section 34 1 10 2 Improvement to coupling definition Products Abaqus Standard Abaqus Explicit Benefits You can now specify multiple coupling constraints on a surface via a single coupling definition instead of multiple definitions Weights for a distributing type coupling are now the same as those formed using fasteners Description It is now easy to specify multiple coupling definitions on a given surface just by including all the reference nodes in a single reference node set instead of defining separate coupling definitions The weights for cloud nodes of a distributing type coupling are identical to those formed using fasteners CONSTRAINTS Reference Abaqus Keywords Reference Manual e COUPLING Section 3 79 10 2 INTERACTIONS 11 Interactions This chapter discusses features related to contact and interaction modeling It provides an overview of the following enhancements e Contact stress output improvements Section 11 1 e Penalty stiffness for contact involving gaskets Section 11 2 e Edge to edge general contact enhancement Section 11 3 11 1 Contact stress output improvements Product Abaqus Standard Benefits Contact stress output is more accurate for second order surfaces Description Contact pressure output CPRESS and contact shear stress
101. stress formulations ELEMENT OUTPUT Use the new EXTERIOR parameter for field output to define an element output set consisting of all the exterior elements in the model FLUID EXCHANGE Use the new CAVITY PRESSURE parameter to apply the fluid pressure on the fluid exchange surface or to model fluid exchange through a vent and apply the fluid pressure as an equivalent load on the perimeter of the surface INITIAL CONDITIONS Use the new DRIVING ELSETS parameter to define the source region from where the temperatures are read from a previous analysis and the target region onto which the temperatures are mapped in the current analysis MEMBRANE SECTION Use the new MEMBRANE THICKNESS parameter to define membrane thicknesses using distributions NODE OUTPUT Use the new EXTERIOR parameter for field output to define a node output set consisting of all the exterior nodes in the model RESPONSE SPECTRUM Two new values are available for the COMP parameter Set COMP R40 or R30 to use the 40 rule or 30 rule respectively for summing directional excitation components as recommended by the ASCE 4 98 standard Two new values are available for the SUM parameter Set SUM DSC to use the double sum combination method Set SUM GRP to use the grouping method 16 3 SUMMARY OF CHANGES mod E mod E mod E mod S mod S E mod E mod E SECTION CONTROLS This option now allows the specification of a scale factor
102. tinuum elements PRODUCT INDEX Section 9 4 Section 9 5 Section 10 2 Section 11 3 Section 13 1 Section 15 2 Specifying the source and target regions for temperature mapping Explicit dynamics analysis using Abaqus Aqua Improvement to coupling definition Edge to edge general contact enhancement Output database size reduction Support for NumPy library for Python in Abaqus Abaqus CFD Section 6 3 Section 8 3 New RNG k epsilon turbulence model for fluid dynamic analysis New 6 node triangular prism for fluid flow problems Section 13 2 Streamlines Abaqus CAE Section 2 2 Context bar list navigation in Abaqus CAE Section 2 3 Copying step dependent objects to a different step Section 4 1 Substructures in Abaqus CAE Section 4 3 Enhancements to the offset extend and blend face tools Section 4 4 Creating a wire from edge feature Section 4 5 Adding a mirror feature to a part Section 4 7 Thickness and material orientation distributions for membrane elements and sections Section 5 1 Exporting models in OBJ format Section 5 2 Improved import and translation of membrane data from Nastran models Section 6 3 New RNG k epsilon turbulence model for fluid dynamic analysis Section 6 7 Defining a spectrum using values of S as a function of frequency and damping in Abaqus CAE Section 6 9 New modal and directional summation methods for response spectrum analysis Section 7 1 Material calibration Section 8 1 New linear pore pressur
103. ubstructure generation substructure usage and substructure recovery e The new Substructure generation step definition enables you to control several aspects of substructure generation in your analysis including its recovery region generation options retained eigenmodes and damping controls Multiple preloading steps can precede the substructure generation step in your analysis Once you specify a substructure generation step you can create a boundary condition to specify the retained nodal degrees of freedom for nodes or regions in the substructure These retained degrees of freedom are displayed in light blue in the viewport and you can select them when you create assembly constraints e You can use substructures in your model by first importing them into the model database as new part definitions The new Create Substructure Part dialog box enables you to customize the name of the new substructure part you import and to specify the output database file containing the mesh you want to display for the selected substructure MODELING Once imported you can instance a substructure based part in Abaqus CAE in the same way that you can for any other part definitions and you can translate and perform other manipulations on substructure part instances using the same tools you use to manipulate the other part instances in your assembly Abaqus CAE distinguishes substructure part instances by displaying them with a translucent color by default Fi
104. ved element time estimation method usually results in a larger element stable time increment than a more traditional method References Abaqus Analysis User s Manual e Explicit dynamic analysis Section 6 3 3 e Fully coupled thermal stress analysis Section 6 5 4 6 1 ANALYSIS PROCEDURES Abaqus Keywords Reference Manual e DYNAMIC e DYNAMIC TEMPERATURE DISPLACEMENT 6 2 Continued enhancements to the XFEM based crack propagation capability Product Abaqus Standard Benefits The extended finite element method XFEM allows you to model discontinuities such as cracks along an arbitrary solution dependent path during an analysis A user defined damage initiation criterion can now be used within the framework of XFEM This capability is very useful to accurately predict the durability and damage tolerance of composite structures and the bone fracture with complex failure mechanisms A low cycle fatigue analysis can now be simulated with XFEM for a structure subjected to cyclic loading by using the direct cyclic approach Description XFEM allows you to model crack growth without remeshing the crack surfaces since it does not require the mesh to match the geometry of the crack A user defined damage initiation criterion is now supported User subroutine UDMGINI provides a very general capability for implementing a user defined damage initiation criterion You can specify more than one failure mechanism in an enriched

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