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SVSolid Tutorial Manual

1. Y a Izil i poa Re mE ror TE Bou A IASB dh Suction 8 z D s Ee topes ene EE NETS UEM M S The contour plot of suction indicates the development of higher suction at the uncovered boundary due to evaporation soILvision systems LTD 2D Edge Drop of a Flexible Impervious Cover 51 of 55 T Displacement 6 50 6 00 3 t 5 50 5 00 4 50 4 00 3 50 3 00 d 2 50 2 00 1 50 1 00 0 50 0 00 Scale E 4 Displacement Vectors show the direction and the magnitude of the displacement at specific points in the model Settlement due to shrinkage is the largest is greatest under the uncovered ground surface The SVSOLID Summary file will generate the same plots as the regular SVSOLID analysis that apply to the displacement variables Only in this case the plots will be the summation of the results from each stage T e 2 x E 1 fi 1 rE E emen a 2 2 2 4 v 2 6 4 E A E J v gt 28 3 E 3 2 2 0 3 6 9 12 SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 52 of 55 The above plot shows the vertical displacement along the length of the ground surface The largest differential settlements took place near the edge of the cover About 10mm of settlement occurred after 5 days of evaporation from the ground surface T e 3
2. Vertical Stress sy Display and Sav Xx Horizontal Stress Sk Display and Sav Y Displacement uv Display and Sav Final Mesh Deformed Mesh Display and Sav Geometry Initial Mesh Display and Sav Add New Plot w zz e BI Copy Delete Properties Multiple Update Q Fot setings Add Defauts DefautPlo OK Cancel 2 The toolbar at the bottom left corner of the Plot Manager dialog contains a button for each plot type Clicking to the Contour button will begin adding the first contour plot The Properties dialog drop down will open 3 Enter the title Vertical Stress 4 Select Sy as the variable to plot from the drop down 5 Click OK to close the dialog and add the plot to the list of requested graphical plots 6 Repeat Steps 2 to 5 to create the plots as shown above 7 Click OK to close the Plot Manager and return to the workspace f Run Model Solve Analyze The current model may be run by selecting the Solve gt Analyze menu option g Visualize Results Window AcuMesh The visual results for the current model may be examined by selecting the Window ACUMESH menu option 2 2 Results and Discussion After the computations for the model have been completed the results will be displayed as a series of thumbnail plots within the SVSOLID solver Right clicking the mouse on any thumbnail plot and selecting Maximize will enlarge that particular graph The followin
3. Vert Disp Depth The above plot shows vertical displacement below the edge of the cover The plot shows that most of the settlement took place near the ground surface where the change in matric suction was the largest and the where the material has a low elastic modulus SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 53 of 55 T Vertical Displacement 0 02 0 00 0 20 0 40 0 60 0 80 1 00 1 20 1 40 1 60 1 80 2 00 2 20 2 40 2 60 2 80 3 00 3 20 3 20 B E E P Cogo mn Se owa Seale E 2 D 3 6 9 12 X The vertical displacement contours plot shows a maximum settlement of 32mm at the top right corner of the material region The 2D Edge Drop of a Flexible Impervious Cover tutorial model is now complete SOILVISION SYSTEMS LTD References 54 of 55 5 References FlexPDE 6 x Reference Manual 2007 PDE Solutions Inc Spokane Valley WA 99206 Fredlund D G and H Rahardjo 1993 Soil Mechanics for Unsaturated Soils John Wiley amp Sons New York SOILVISION SYSTEMS LTD This page has been left intentionally References 55 of 55
4. NOTE When a new material is created you can specify the display color of the material by using the Fill Color box in the Material Properties menu This material color will be displayed for any region that has a material assigned to it will display that material s fill color 4 Select the new material and click Properties to open the Material Properties dialog 5 Move to the Parameters tab 6 Enter the Young s Modulus value of 3000 kPa Soil Properties Linear Elastic SolName Clay Fill Color Parameters Initial Parameters PWP Body Load Shear Strength Elastic Parameters Youna s Modulus Option Young s Modulus 3000 kPa Poisson s Ratio 04 Bulk Modulus Option Bulk Modulus kPa Shear Modulus kPa 7 Enter the Poisson s Ratio value of 0 4 8 Move to the Initial Parameter tab SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 13 of 55 9 Enter a Void Ratio value of 1 10 Move to the Body Load tab ll Enter the X Axis Body Load as 0 kN m3 12 Enter the Y Axis Body Load as 18 5 kN m3 13 Press OK to close the dialog 14 Repeat these steps to create the till material refer to the data provided under the A Two Dimensional Example M odel section at the beginning of this tutorial 15 Press OK to close the Materials Manager dialog NOTE The negative sign for the body load indicates that the vertical body load acts in a downward direction Once all material properties
5. Project Foundations Model Tutorial3D Minimum authorization required STUDENT Model Description and Geometry Circular Foundation on Slope Pillar Foundation Material Properties Material 1 Till Data Type Linear Elastic Young s Modulus E 10 000 kPa Poisson s Ratio v 0 4 Initial Void Ratio e l Vertical Body Load y 21 kN m Material 2 Concrete SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 18 of 55 Data Type Linear Elastic Young s Modulus E 29 580 000 kPa Poisson s Ratio v 0 2 Initial Void Ratio e 0 Vertical Body Load y 23 5 kN m 3 1 Model Setup In order to set up the model described in the preceding section the following steps will be required The steps fall under the general categories of a Create model b Enter geometry Specify boundary conditions d Apply material properties Specify model output f Run model g Visualize results a Create Model The following steps are required to create the model 1 Open the SVOFFICE Manager dialog 2 Select ALL under the Applications combo box and ALL for the M odel Origin combo box 3 Select the project called UserTutorial from the list of projects 4 Create a new model called UserTutorial3D by pressing the New button next to the list of models The new model will be automatically added under the recently created UserTutorial project Use following settings when creating a new model App
6. SUSOLID 2D 3D Stress Deformation Modeling Software Tutorial Manual Written by Murray Fredlund PhD PEng Gilson Gitirana PhD Robert Thode BSc GE Edited by Murray Fredlund PhD PEng SoilVision Systems Ltd Saskatoon Saskatchewan Canada Software License The software described in this manual is furnished under a license agreement The software may be used or copied only in accordance with the terms of the agreement Software Support Support for the software is furnished under the terms of a support agreement Copyright Information contained within this Tutorial M anual is copyrighted and all rights are reserved by SoilVision Systems Ltd The SVSOLID software is a proprietary product and trade secret of SoilVision Systems The Tutorial M anual may be reproduced or copied in whole or in part by the software licensee for use with running the software The Tutorial Manual may not be reproduced or copied in any form or by any means for the purpose of selling the copies Disclaimer of Warranty SoilVision Systems Ltd reserves the right to make periodic modifications of this product without obligation to notify any person of such revision SoilVision does not guarantee warrant or make any representation regarding the use of or the results of the programs in terms of correctness accuracy reliability currentness or otherwise the user is expected to make the final evaluation in the context of his her own problems
7. Enter the Saturated Hy draulic Conductivity value of 8 64E 08 m day Select the Leong and Rahardjo unsaturated hy draulic conductivity option Press the Properties button to the right of the Leong and Rahardjo option to open the Leong and Rahardjo Estimation dialog Enter the Leong p value of 1 Leong and Rahardjo Estimation Leong p 1 Leong Error 0 R k minimum 8 54E 08 m day Apply k minimum Click OK to close the dialog Click OK to close the Material Properties dialog that was defined will need to be assigned to the Ground region that was imported Select Model Geometry Regions from the menu to open the Regions dialog Select the ED Transient material from the M aterial drop down Click OK to close the Regions dialog SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 40 of 55 e Specify Model Output Two levels of output may be specified i output graphs contour plots fluxes etc which are displayed during model solution and ii output which is written to a standard finite element file for viewing with ACUMESH software Output is specified in the following two dialogs in the software i Plot Manager Output displayed during model solution ii Output M anager Standard finite element files written out for visualization in ACUMESH or for inputting to other finite element packages PLOT MANAGER Model gt Reporting gt Plot Manager There are numerous types
8. From the X Boundary Condition drop down select a Fixed Boundary Condition From the Y Boundary Condition drop down select a Free Boundary Condition 9v Uno o ce Enter the remaining Boundary Conditions found in the Boundary Condition Summary table below 7 Click the OK button to close the dialog NOTE The Fixed X Boundary Condition for the coordinate point 5 41 becomes the boundary condition for the following line segments that have a Continue Boundary Condition until a new boundary condition is specified By specifying a Free condition at point 73 36 the Continue Boundary Condition is turned off Boundary Condition Summary 35 43 Conime Continue 31 43 Continue Continue 27 44 pone Continue 25 45 Continue Continue SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 12 of 55 d Apply Material Properties Model gt Materials The next step in defining the model is to enter the material properties for the two materials that will be used in the model This section provides instructions on creating the clay shale material Repeat the process to add the other material l Open the Materials dialog by selecting Model gt Materials gt Manager from the menu 2 Click the New button to create a material A unique Material Index is generated that is used to reference the material in other SVSOLID dialogs 3 Enter Clay Shale for the material name in the dialog that appears
9. The stress state generated by the load on the pillar can be examined using the ACUMESH software The effects of both vertical load and skin friction can be observed Displacement Contours v v0 0 007976 0 0057 0 003423 0 001147 0 001129 0 003406 0 007958 SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 28 of 55 The above figure shows the displacement vectors in the direction of movement The magnitude of the displacement at specific points in the model is also shown The pillar displaces 0 07m 7 0mm due to the 500 kPa load SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 29 of 55 4 2D Edge Drop of a Flexible Impervious Cover This example simulates the modeling of water infiltration into a material and the subsequent ground movements that are likely to occur A 2D Edge Drop simulation is performed for a Flexible Impervious Cover 4 1 Model Overview The following example will provide a step by step guide to modeling slab movement using a manual iteration technique involving the SVFLUX and SVSOLID software packages There are two main scenarios that are commonly considered namely the Edge Drop of a slab caused by shrinking of the material due to evaporation i e increase in soil suction and Edge Lift of a slab caused by swelling due to infiltration i e decrease in soil suction This tutorial model will consider the Edge Drop scenario Model Description and Geometry A 12
10. Trademarks Windows is a registered trademark of Microsoft Corporation SoilVision is a registered trademark of SoilVision Systems Ltd SVOFFICE is a trademark of SoilVision Systems Ltd SVFLUX is a trademark of SoilVision Sy stems Ltd CHEM FLUX is a trademark of SoilVision Sy stems Ltd SVHEAT is a trademark of SoilVision Systems Ltd SVAIRFLOW is a trademark of SoilVision Systems Ltd SVSOLID is a trademark of SoilVision Systems Ltd SVSLOPE is a trademark of SoilVision Systems Ltd ACUM ESH is a trademark of SoilVision Sy stems Ltd FlexPDE is a registered trademark of PDE Solutions Inc Copyright 2008 by SoilVision Systems Ltd Saskatoon Saskatchewan Canada ALL RIGHTS RESERVED Printed in Canada SOILVISION SYSTEMS LTD Table of Contents 3 of 1 INTO GU CHO ouo eee Me od atl ete eet tte nie RUE eve PER REIR e HAM USE 2 A Two Dimensional Example Model sssse eects ee eeaeeneeeeeeneeeeaees 2 1 Model Setup 1o ERO oe A eas eae ite 2 2 Results and Discussion oo ee teen Here 3 A Three Dimensional Example Model sssssss eeeeeeeaeaes 3 1 Model Set p uccisi ein eye thie ERER LU EE YE RE DO Phares 3 2 Results and DISCUSSION crece i dne cy XR RR CANTA Re I HR 4 2D Edge Drop of a Flexible Impervious Cover sess 4 1 Model Overview iue reete er tede Tp eR e I e ea denen 4 2 Initial SVFLUX Seepage Analysis ess 4 2 1 Mod
11. To add the last point move the cursor near the point 5 41 and right click snapping the cursor the coordinate point Double click on the point to finish the shape A line is now drawn from 6 41 to 5 41 and the shape is automatically completed in SVSOLID by drawing a line from 5 41 back to the starting point 5 38 If the seam geometry has been entered correctly the shape should look as follows SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 10 of 55 e Define the Water Table The instructions below explain the use of the mouse to create the water table region l Select Water Table as the region by going to Model gt Geometry gt Regions and clicking on Water Table Press OK to close the dialog Select Draw Model Geometry Water Table from the menu The cursor will now be changed to cross hairs UM mo Qc dee Move the cursor near to coordinates 5 39 in the drawing space You can view the coordinates for the current position of the mouse in the status bar at the bottom right of the screen 6 To select a point as part of the desired region shape left click on the point 7 Now move the cursor near 73 34 and then double click on the point A line is now drawn from coordinates 5 39 to 73 34 After all the region geometries have been entered the diagram will appear as shown at the beginning of this tutorial c Specify Boundary Conditions Model gt Boundaries Boundary conditions must
12. be applied to all region points The starting point for that particular boundary condition is initiated at any boundary point on a region geometry The boundary condition will then extend over subsequent line segments around the edge of the region The direction for the application of the boundary conditions is determined by the way the geometry was originally entered Boundary conditions remain in effect around a geometry shape until they are re defined The user may not define two different boundary conditions over the same line segment More information on boundary conditions can be found in Menu System Model Menu Boundary Conditions 2D Boundary Conditions of the User s Manual The next step is to specify the boundary conditions A load expression needs to be defined each of the footing locations on the ground region The sides should be fixed in the X direction At the base the region should fixed in both the X and Y directions The Seam region is internal to the Ground region and will not need to be altered as far as boundary conditions are concerned The steps in specify ing the boundary conditions are as follows l Select the Ground region in the drawing space SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 11 of 55 2 Select Model gt Boundaries gt Boundary Conditions from the menu The Boundary Conditions dialog will open Select the coordinate point 5 41 from the list on the Segment Boundary Conditions tab
13. is to provide the elevation values The geometry will be generated using the 3D Plane Interpolation method 38 39 40 41 42 43 44 45 46 47 48 Select Surface 3 in the Surface Selector Select Model gt Geometry gt Surface Properties in the menu to open the Surface Properties dialog Select the Elevation data from the Surface Definitions Options drop down and select the Elevations tab to set up the elevations for Surface 3 Select point 0 0 Enter a Z elevation of 6 Select point 0 20 Enter a Z elevation of 6 Select point 20 20 Enter a Z elevation of 10 Press the 3D Plane Interpolation button and press the Yes button Press OK to close the dialog c Specify Boundary Conditions Model gt Boundaries Boundary conditions must be applied at all points around a region Once a boundary condition is applied to a boundary point this defines the starting point for that particular boundary condition The boundary condition SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 23 of 55 will then extend over subsequent line segments around the edge of the region in the direction in which the region shape was originally entered Boundary conditions remain in effect around a shape until re defined The user may not define two different boundary conditions over the same line segment More information on boundary conditions can be found in Menu System gt Model Menu gt Boundary Conditions gt
14. pia o Fe Come Poo 0 Come Conime poo o Fia Continue e Apply Material Properties Model gt Materials The next step in defining the model is to enter the material properties for the material that will be used in the model Refer to the Model Overview section of this tutorial for the relevant material properties l Openthe Materials dialog by selecting Model Materials Manager from the menu 2 Click the New Material button to create a material A unique Material Index is generated that is used to reference the material in other SVSOLID dialogs Enter a Material Name of ED M aterial Select Unsaturated as the Model Type and click OK to create the new material 3 4 5 The Material Properties dialog will automatically open 6 Move to the Parameters tab 7 Enter the Poisson s Ratio value of 0 4 8 Enter the K value of 0 33 NOTE The Poisson s Ratio and K are considered as independent variables in this analysis Be sure to leave the Relate nu and K by nu K 1 K checkbox unchecked The K is used for determining initial conditions while the Poisson s Ratio is used in the general stress versus deformation analysis 9 Enter the Initial Void Ratio value of 1 10 Enter the C value of 0 15 ll Enter the C value of 0 13 12 Move to the Body Load tab 13 Enter the Y Axis Body Load as 17 2 kN m 14 Click OK to close the Material Properties dialog 15 Cli
15. the difference between the initial and final suctions from the specified transfer files The stages will be set to 25 for this analysis Therefore the incremental displacements will be calculated for each suction increment at each stage To set the stages to 25 follow these steps l Access the FEM Options dialog by selecting Model gt FEM Options from the menu 2 Press the Advanced button at the bottom of the dialog to show the Advanced options 3 Enter 25 in the STAGES field 4 Click OK to close the dialog g Specify Model Output Two levels of output may be specified i output graphs contour plots fluxes etc which are displayed during model solution and ii output which is written to a standard finite element file for viewing with ACUM ESH software Output is specified in the following two dialogs in the software i Plot Manager Output displayed during model solution ii Output M anager Standard finite element files written out for visualization in ACUMESH or for SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 48 of 55 inputting to other finite element packages PLOT MANAGER Model gt Reporting gt Plot Manager There are numerous types of plots that can be specified to visualize the results of the model A few will be generated for this tutorial example model including a plot of the solution mesh stress contours and displacement vectors Plots are not required for model solution but no result
16. the run data NOTE While the model is running the results will be displayed in the dialog of thumbnail plots within the soILVISION systems LTD 2D Edge Drop of a Flexible Impervious Cover 49 of 55 SVSOLID solver Right click the mouse and select M aximize to enlarge any of the thumbnail plots i Visualize Results Window AcuMesh The results for the current model may be visualized by selecting the Open ACUM ESH Window gt ACUMESH menu option 4 4 2 Results and Discussion To view the SVSOLID results once the model has finished select Output FlexPDE Plots Reports from the SVSOLID menu The results will be displayed in the dialog of thumbnail plots within the SVSOLID solver Right click the mouse and select M aximize to enlarge any of the thumbnail plots This section will give a brief analysis for some plots that were generated T SE REN M ee ee ei 1 TAE The Mesh plot displays the finite element mesh generated by the solver The mesh is automatically refined in critical areas such as near the ground surface where there is a greater void ratio change The displacements in this plot are magnified by 50 times soILvision systems LTD 2D Edge Drop of a Flexible Impervious Cover 50 of T Vertical Stress 0 09 0 00 0 50 1 00 1 50 2 00 2 50 3 00 3 50 4 00 4 50 5 00 5 50 6 00 6 50 7 00 7 50 8 00 8 50 9 00 9 50 9 51 E
17. to represent the material below the water table To add the necessary regions follow these steps 1 Open the Regions dialog by selecting Model gt Geometry gt Regions from the menu 2 Change the first region name from Region 1 to Ground To do this highlight the name and type the new text Press the New button to add a second region Change the name of the second region to Seam Select Clay Shale as the material for the Seam region Click New to add the third region Name the third region Water Table CO te IO to Ge IOS Click OK to close the dialog The shapes that define each material region will now be created Note that when drawing a geometric shape information will be added to the region that is current in the Region Selector The Region Selector is at the top of the workspace e Define the Ground The instructions below explain the use of the mouse to create the ground region l Select Ground as the region by going to Model gt Geometry gt Regions and clicking on Ground SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 9 of 55 2 3 4 5 Press OK to close the dialog Select Draw Model Geometry Polygon Region from the menu The cursor will now be changed to cross hairs Move the cursor near to coordinates 5 41 in the drawing space You can view the coordinates for the current position of the mouse in the status bar at the bottom right of the screen To select a point as part of the desi
18. 0 220 240 The plot above shows the pore water pressure along the ground surface after 3 days of evaporation There is a high suction gradient within 1 meter of the outside edge of the cover and the suction change is uniform elsewhere In the plot below the pore water pressure profile below the cover edge after 3 days of evaporation SOILVISION SYSTEMS LTD 2D Edge Drop of a Flexible Impervious Cover 43 of 55 is shown The majority of the suction change occurs near the ground surface When compared to the plots for 1 and 5 days of evaporation it can be seen that the suction change advances deeper with time T cai 2 N 200 d 7 E 250 wa m a A ao a g 30 7 3 a y T 350 1 JA A lie 400 4 2 EH T T T T T 3 2 5 2 1 5 1 0 5 Y 4 4 SVSOLID Stress Deformation Analysis Now that the seepage component of the model has been completed a stress analysis must be defined using SVSOLID This analysis will use the initial pore water pressure transfer file from the Initial SVFLUX Analysis and the final pore water pressure transfer file from the SVELUX Transient Analysis This stress analysis will be run for 25 stages and the displacements calculated and output at each stage These incremental displacements will be summed to obtain the total movements using a summary file Project SlabOnGround Model Shrink_Day5 N
19. 11 Select the point 6 0 from the list 12 From the Boundary Condition drop down select a Zero Flux Boundary Condition NOTE The Continue boundary condition indicates that the previously defined boundary condition will apply to the current boundary segment 13 Click OK to return to the workspace d Apply Material Properties Model gt Materials The next step in defining the model is to enter the material properties applicable to the model l Openthe Materials dialog by selecting Model Materials Manager from the menu 2 Select the ED Transient material and click Properties to open the Material Properties dialog NOTE When a new material is created you can specify the display color of the material using the Fill Color box on the Material Properties menu Any region that has a material assigned will have the color displayed soILvision systems LTD 2D Edge Drop of a Flexible Impervious Cover 39 of 55 10 11 12 13 14 15 The material 1 2 3 Move to the SWCC tab Refer to Material Properties table in the model overview section of this manual Enter a Saturated VWC value of 0 45 Select the Fredlund and Xing Fit as the SWCC option Press the Properties button to the right of the Fredlund amp Xing Fit option to open the Fredlund amp Xing Fit dialog Enter the fit parameters from the material properties table Click OK to close the dialog Move to the Hydraulic Conductivity tab
20. 2D Boundary Conditions in the User s Manual Now that all of the regions surfaces and materials have been successfully defined the next step is to specify the boundary conditions on the region shapes The vertical boundaries of the slope will be fixed as will the base A load of 500 kPa can be applied to the top of the pillar The steps for specifying the boundary conditions are as follows e Slope Region 1 Make sure your model is being viewed in 2D This option is available to the left side of the workspace by clicking the 2D button 2 Select the Slope region by going to Model gt Geometry gt Regions and clicking on Slope 3 Select Surface 1 by going to Model gt Geometry gt Surfaces and clicking on Surface 1 4 From the menu select Model gt Boundaries gt Boundary Conditions The Boundary Conditions dialog will open and display the boundary conditions for Surface 1 These boundary conditions will extend from Surface 1 to Surface 2 over Layer 1 Select the Surface Boundary Conditions tab at the top of the dialog From the X Boundary Condition drop down select a Fixed Boundary Condition From the Y Boundary Condition drop down select a Fixed Boundary Condition From the Z Boundary Condition drop down select a Fixed Boundary Condition 19s el ey A Select the Segment Boundary Conditions tab at the top of the dialog 10 From the X Boundary Condition drop down for the first point select a Fixed Boundary Condit
21. Model Solve Analyze The next step is to solve the example problem or analyze the model Select Solve Analyze from the menu This action will write the descriptor file and open the SVFLUX solver The solver will automatically begin solving the model and the Run Log dialog will open in SVFLUX When the solver has completed all computations press the Read File button on the Run Log dialog to record the run data g Visualize Results Window gt AcuMesh The results for the current model may be visualized by selecting the Open ACUM ESH Window gt ACUMESH menu option 4 3 2 Results and Discussion After the model has finished solving the results will be displayed in the dialog of thumbnail plots within the SVFLUX solver Right click the mouse and select Maximize to enlarge any of the thumbnail plots This section will give a brief analysis for a few plots that were generated The output files requested PWPT trn HeadTransfer trn and ACUM ESH dat will be located in the solution file directory for the model SoOILvVIsIOn systems LTD 2D Edge Drop of a Flexible Impervious Cover 42 of 55 T PWP Total 165 170 180 190 EI PTS Rem SUT ERP ot Ate Cee gh B is oo e b e The pore water pressure contour plot above indicates increased suction near the uncovered ground surface due evaporation from the area outside the flexible slab T 140 160 180 Surface Day 3 20
22. OTE The operation of the SVSOLID software is similar to SVFLUX Many of the following steps will be the same 4 4 4 Model Setup In order to set up the model described in the preceding section the following steps will be required The steps fall under the general categories of a Create model b Enter geometry SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 44 of 55 Specify initial conditions Specify boundary conditions Apply material properties Specify final conditions Specify model output Run model Visualize results a Create Model The following steps are required to create the model 1 2 3 4 Open the SVOFFICE Manager dialog Select ALL under the Applications combo box and ALL for the M odel Origin combo box Select the project called UserTutorial from the list of projects Create a new model called User_ED_Day5 by pressing the New button next to the list of models The new model will be automatically added under the UserTutorial project Use the settings shown in the screen capture below when creating a new model Select the following Application SVSOLID System 2D Vertical Units Metric b Enter Geometry Model gt Geometry Since the Ground region and its geometry were defined previously for the Initial SVFLUX Analysis the Import SVFLUX Geometryfeature can be used to save time for this analysis by importing the geometry from the SVFLUX software Follow the steps in the
23. a o Tutorial ED Initial Grid 1 p2 Nodes 293 Cells 128 RMS En 6 4e 9 Stage 1 Integral 7559 902 The contour plot of pore water pressure above indicates 20 kPa at the ground surface and a decrease with depth to 400 kPa at the bottom Note that a pore water pressure of 20 kPa corresponds to a metric suction of 20 kPa and a pore water pressure of 400 kPa corresponds to a metric suction of 400 kPa 4 3 SVFLUX Transient Seepage Analysis The SVFLUX transient seepage analysis will use the initial head transfer file to represent initial conditions This step will output a pore water pressure transfer trn file for the SVSOLID stress deformation analysis Project SlabOnGround Model Shrink Transient 4 3 1 Model Setup In order to set up the model described in the preceding section the following steps will be required The steps fall under the general categories of a Create model b Enter geometry c Specify boundary conditions d Apply material properties Specify model output f Runmodel SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 37 of 55 g Visualize results a Create Model The following steps are required to create the model l 2 3 4 Open the SVOFFICE Manager dialog Select ALL under the Applications combo box and ALL for the M odel Origin combo box Select the project called UserTutorial from the list of projects Create a new model called User_ED_Transi
24. art can be defined on any given region This model is divided into two regions which are called the Slope and the Pillar Each region has one materials specified as its material properties The regions and materials can be combined using the following steps 1 Open the Regions dialog by selecting Model gt Geometry gt Regions from the menu 2 Change the first region name from R1 to Slope This can be done by highlighting the name and typing new text 3 Press the New button to add a second region 4 Change the name of the second region to Pillar 5 Click OK to close the dialog e Define the Slope region 1 Select Slope as the region by going to Model gt Geometry gt Regions and clicking on Slope Select Draw gt Model Geometry gt Region Polygon from the menu The cursor will now be changed to cross hairs eo ee tS Move the cursor near 0 0 in the drawing space The coordinates of the current position of the mouse can be viewed on the status bar just below the workspace 5 To select the point as part of the shape left click on the point 6 Now move the cursor near 20 0 Right click to snap the cursor to the exact point and then left SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 20 of 55 click on the point A line is now drawn from 0 0 to 20 0 Now move the cursor near 20 20 Right click to snap the cursor to the exact point and then left click on the point For the last point 0 20 righ
25. ck OK to close the Materials Manager dialog SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 47 of 55 NOTE For the Unsaturated material model the void ratio is a function of the net mean stress as well as the matric suction Use the Graph Void Ratio button to view graphs of Void Ratio versus Net Mean Stress at a given matric suction and of Void Ratio versus Matric Suction for a given net mean stress The material that was previously defined will need to be assigned to the Ground region that was just imported l Select Model gt Geometry gt Regions from the menu to open the Regions dialog 2 Select the ED Material from the Material drop down 3 Click OK to close the Regions dialog f Specify Final Conditions Once the material properties have been applied the final conditions should be applied l To open the Final Conditions dialog select Model gt Final Conditions gt Settings from the menu 2 Move to the Unsaturated Model tab 3 Select Transfer File TRN as the Final PWP Option 4 Press the Browse button 5 Then specify the path to the PWPT_6 trn file output by the SVFLUX Transient Analysis The file corresponds to the pore water pressure after 5 days of evaporation The file counter considers time 0 as _1 therefore _6 corresponds to day 5 6 Click OK to close the dialog The number of stages will control the incremental change in suction The total change in suction is equal equal to
26. curity codes provided by SoilVision Systems at the time of purchase have not yet been entered Please see the the Authorization section of the SVOFFICE User s Manual for instructions on entering these codes The following steps are required to create the model l Openthe SVOFFICE Manager dialog 2 Create a new project called Tutorial by pressing the New button next to the list of projects 3 Create a new model called UserTutorial2D by pressing the New button next to the list of models The new model will be automatically added under the recently created Tutorial project 4 Select the following Application SVSOLID System 2D Vertical Type Steady State Units Metric The user should also set the World Coordinate System to ensure that the model will fit in the drawing space The World Coordinate Sy stem settings can be set under the World Coordinate System tab on the Create Model dialog l Access the World Coordinate System tab on the Create New Model dialog 2 Enter the World Coordinates System coordinates shown below into the dialog x minimum 0 y minimum 15 x maximum 77 y maximum 57 3 Click OK to close the dialog The workspace grid spacing needs to be set to aid in defining region shapes The geometry of the model has coordinates of a precision of 1m In order to effectively draw the geometry with this precision when using the mouse the grid spacing must be set to a maximum value of 1 1 The View Op
27. el Setup 4 2 2 Results and Discussion 4 3 SVFLUX Transient Seepage Analysis sse 4 3 1 Model Setup 4 3 2 Results and Discussion 4 4 SVSOLID Stress Deformation Analysis see 4 4 1 Model Setup 4 4 2 Results and Discussion 5 4R ferenGCes com dvavieset xi e et vr ete P rt NV Lt er DUE VR bade E AE E rt CURE dee SOILVISION SYSTEMS LTD Introduction 4 of 55 1 Introduction The Tutorial Manual serves a special role in guiding the first time users of the SVSOLID software through a typical example problem The example is typical in the sense that it is not too rigorous on one hand and not too simple on the other hand The Tutorial Manual serves as a guide by i assisting the user with the input of data necessary to solve the boundary value problem ii explaining the relevance of the solution from an engineering standpoint and iii assisting with the visualization of the computer output An attempt has been made to ascertain and respond to questions most likely to be asked by first time users of SVSOLID SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 5 of 55 2 A Two Dimensional Example Model The following example introduces some of the features included in SVSOLID The example problem sets up a model of a simple slope with two foundation loads applied A water table is present The purpose of this model is to determine the stress conditions in the slope due to applied loads and the magnitude of d
28. ent by pressing the New button next to the list of models The new model will be automatically added under the recently created UserTutorial project Select the following Application SVFLUX System 2D Vertical Type Transient Units Metric Time Units Days Move to the Time tab on the Create New Model dialog Set the Start Time as 0 the Time Increment as 1 day and the End Time as 5 days Click OK to close the Create New Model dialog The next step is to define the initial conditions for the model Open the nitial Conditions dialog select Initial Conditions gt Settings in the workspace menu Press the SVFLUX File button Click the Browse button for the Initial SVFLUX File Path and specify the path to the HeadTransfer trn file generated by the ED Initial model Click OK to close the nitial Conditions dialog b Enter Geometry Since the Ground region and its geometry were defined previously for the Initial SVFLUX Analysis the Import SVFLUX Geometry feature can be used to save time for this analysis l 2 3 4 5 Select Model gt Import Geometry gt From Existing Model from the menu Select the UserTutorial Project Select to the ED_Initial model Click the Import button Click Yes to the warning messages SOILVISION SYSTEMS LTD 2D Edge Drop of a Flexible Impervious Cover 38 of 55 6 The Ground region region shape and World Coordinate System settings will be imported c Specify Boundary Conditions M
29. g sections will give a brief description of each plot that can be generated The ACUMESH 2D visualization software can be used for improved graphics quality and a greater range of plotting options Mohr Circle type plots of the principle stresses can be generated for any selected node in the finite element mesh as shown below SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 15 of 55 Stress Below Footing Midpoint Node 300 34 2 20 5 6 85 6 85 Shear Stress KPa 20 5 38 9 52 6 66 3 79 9 93 6 107 Normal Stress KPa e Solution Mesh CORD vraa 4 L7 AAS T DA A x mi eH Tet 5i zx IVa VAYA DEVO Z ak Ata e i CO PAPO e TAa BRE OOS ERO ROL RAV OEE ALR ra OD RIO X VO AZ a AAA AAA IES APAVAVAa vana ER SR VAVAVATAVAVAVATATAS ATN LSZ VV V NISI aara AA NATA nu The Mesh plot displays the finite element mesh generated by the solver The mesh is automatically refined in critical areas such as directly beneath the footings where there is a greater influence from the applied loads e Deformed Mesh gener HEISST STD RILIR SOV V ISR Be Rc LUN NEC eS ae EXT CERES ACN EEpeedaens tee Ca aCA A Oodd DIO RREREEASCOC A A Cata A AVAVA EE e eV e Vt KER ES AVATA VA HAZE AZZ AGERE REPRE CSOC OOO PE ESATA 5 A ON NEN A z The d
30. g the model is to enter the material properties for the two materials comprising the model The slope consists of a till material and the pillar foundation is concrete This section will provide instructions on inputting data for the till material Repeat the process to add the other material l Open the Materials Manager dialog by selecting Model gt Materials gt Manager from the menu 2 Click the New button to create a material NOTE When a new material is created you can specify the display color of the material using the Fill Color box on the Material Properties menu The color for the soil will be displayed for any region that has a material assigned 3 Enter Till for the material name and Linear Elastic as data type then press OK 4 The Material Properties dialog will automatically open 5 Move to the Parameters tab 6 Enter a Young s Modulus value of 10000 kPa 7 Enter a Poisson s Ratio value of 0 4 8 Move to the Initial Parameters tab 9 Enter the Initial Void Ratio value of 1 10 Move to the Body Load tab ll Enter the X Axis Body Load as 0 kN m3 12 Enter the Y Axis Body Load as 0 kN m3 SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 25 of 55 13 Enter the Z Axis Body Load as 21 kN m3 14 Press OK to close the dialog 15 Repeat the above steps to input the properties for concrete Refer to the data provided under the A Three Dimensional Example M odel section at the beginning
31. geometry have been successfully defined the next step is to specify the boundary conditions The base of the model will be fixed in both the X and Y directions The left and right boundaries will be fixed in the X direction but will be free to move in the Y direction The ground surface is free to move in both directions The steps for specifying the boundary conditions are thus Select the Ground region in the drawing space From the menu select Model Boundaries Boundary Conditions The boundary conditions dialog will open Select the point 0 3 from the list on the Segment tab From the X Boundary Condition drop down select a Fixed boundary condition From the Y Boundary Condition drop down select a Fixed boundary condition Select the point 12 3 from the list From the Y Boundary Condition drop down select a Free boundary condition Select the point 12 0 from the list From the X Boundary Condition drop down select a Free boundary condition Select the last point 0 0 from the list From the X Boundary Condition drop down select a Fixed boundary condition Click the OK button to close the dialog SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 46 of 55 specify ing a Free condition at point 12 0 the Continue is turned off and the Free condition established Boundary Condition Summary X Boundary Condition Y Boundary Condition poo s ma _ Fea E 6 3 Continue Contine
32. have been entered we must apply the materials to the corresponding regions 1 Open the Region Properties dialog by selecting Model gt Geometry gt Region Properties from the menu Select Clay Shale as the material for the Seam region Select Till as the material for the Ground region Press the OK button to accept the changes and close the dialog e Specify Model Output Two levels of output may be specified i output graphs contour plots fluxes etc which are displayed during model solution and ii output which is written to a standard finite element file for viewing with ACUMESH software Output is specified in the following two dialogs in the software i Plot Manager Output displayed during model solution ii Output M anager Standard finite element files written out for visualization in ACUMESH or for inputting to other finite element packages PLOT MANAGER Model gt Reporting gt Plot Manager There are numerous graphical plots that can be specified to visualize the results of the model A few typical graphs will be generated for this tutorial example model These plots are the solution finite element mesh horizontal and vertical stress contours and displacement vectors 1 Open the Plot Manager dialog by selecting Model gt Reporting gt Plot Manager from the menu SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 14 of 55 LT ur Plots Point Other Lr 2 e L Solver Option
33. ins a button for each output file type Click on the SVFLUX button to add the head output file Click OK to close the dialog and add the output file to the list Click on the SVSOLID button to add the pore water pressure output file Click OK to close the dialog and add the output file to the list ON Su gs UD Click OK to close the Output Manager and return to the workspace f Run Model Solve Analyze The next step is to solve the example problem or analyze the model Select Solve Analyze from the menu This action will write the descriptor file and open the SVFLUX solver The solver will automatically begin solving the model and the Run Log dialog will open in SVFLUX When the solver has completed all computations press the Read File button on the Run Log dialog to record the run data g Visualize Results Window AcuMesh The results for the current model may be visualized by selecting the Open ACUM ESH Window gt ACUMESH menu option 4 2 2 Results and Discussion After the solution to the SVFLUX model is complete the results will be displayed in the dialog of thumbnail plots within the SVFLUX solver Right click the mouse and select M aximize to enlarge any of the thumbnail plots The output files requested PWP trn and HeadTransfer trn will be located in the solution file directory for the model SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 36 of 55 pans fu m PRATERIE INR E 3
34. ion 11 From the Y Boundary Condition drop down for the first point select a Fixed Boundary Condition NOTE The Fixed boundary condition for the point 0 0 becomes the boundary condition for the following line segments that have a Continue boundary condition applied until a new boundary condition is specified The boundary conditions for the slope region are to be the same for Layer 2 as for Layer 1 Therefore the Surface 1 segment boundary conditions can be copied to Surface 2 12 Inthe Boundary Conditions dialog ensure that Surface 1 is currently in the drop down 13 Press the Copy Boundary Conditions button to open the Copy Boundary Conditions dialog 14 Select Surface 2 from the list SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 24 of 55 15 Press OK 16 Close the Boundary Conditions dialog e Pillar Region 17 Select the Pillar region in the region selector 18 Select Surface 3 in the surface selector 19 From the menu select Model gt Boundaries gt Boundary Conditions The Boundary Conditions dialog will open and display the boundary conditions for Surface 3 20 Select the Surface Boundary Conditions tab at the top of the dialog 21 From the Z Boundary Condition drop down select a Load Expression boundary condition 22 Enter a value of 500 in the expression field 23 Click OK to close the dialog d Apply Material Properties Model gt Materials The next step in definin
35. isplacement under each footing The model dimensions and material properties are provided below Project Foundations Model Tutorial2D Minimum authorization required STUDENT Model Description and Geometry Materials Till E 5 00E 004 kPa v 0 4 Clay E 3 00E 003 kPa v 0 4 50 0 Footing 1 Ground Seam Water Table SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 6 of 55 Material Properties Material 1 Till Young s Modulus E 50000 kPa Poisson s Ratio v 0 4 Initial Void Ratio e 1 Vertical Body Load y 21 kN m Material 2 Clay Young s Modulus E 3000 kPa Poisson s Ratio v 0 4 Initial Void Ratio e 1 Vertical Body Load y 18 5 kN n 2 1 Model Setup In order to set up the model described in the preceding section the following steps will be required The steps fall under the general categories of a Create model b Enter geometry c Specify boundary conditions d Apply material properties Specify model output f Run model g Visualize results a Create Model Since FULL authorization is required for this tutorial the user must perform the following steps to ensure full authorization is activated SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 7 of 55 1 Plugin the USB security key 2 Goto the File gt Authorization dialog on the SVOFFICE M anager 3 Software should display full authorization If not it means that the se
36. isplacements in this plot have been magnified by 50 times Note that the greatest displacement occurs directly beneath the footings Also the displacements in the clay seam are much greater than the surrounding till due to the differences in Young s Modulus e Vertical Displacements SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 16 of 55 A stress bulb is generated beneath each footing due to each footing load The body load of both materials generates the overall stress state e Displacement Vectors Displacement Vectors show both the direction and the magnitude of the displacement at specific points in the model The lower Young s M odulus in the clay shale seam result in greater displacements than in the overlying till The maximum displacement of 0 16m 16mm occurs beneath Footing 1 where the load is greater and the distance to the clay seam is less SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 17 of 55 3 A Three Dimensional Example Model The following example introduces you to three dimensional modeling using SVSOLID The model computes the stress and displacement generated as a result of placing pillar foundation on a sloping ground surface The circular pillar foundation has been placed at the mid slope The model is modeled using two regions three surfaces and two materials The model data and material properties are provided below This model is set up to run with the Student Version of SVSOLID
37. lication SVSOLID System 3D Vertical Type Steady State Units Metric The user should also set the World Coordinate System to ensure that the model will fit in the drawing space The World Coordinate Sy stem settings can be set under the World Coordinate System tab on the Create Model dialog l Access the World Coordinate System tab on the Create Model dialog 2 Enter the World Coordinates System coordinates shown below into the dialog x minimum 0 SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 19 of 55 y minimum 5 z minimum 5 x maximum 25 y maximum 25 z maximum 10 3 Click OK to close the dialog The workspace grid spacing needs to be set to aid in defining region shapes The geometry data for this model has coordinates of a precision of 1m The grid spacing should therefore be set to a maximum of 1 in order to effectively draw the geometry with this precision using the mouse 1 The View Options dialog should open once the Create Model dialog is closed 2 Enter 1 for both the horizontal and vertical spacing 3 Click OK to close the dialog b Enter Geometry Model Geometry A region in SVSOLID is the basic building block for a model A region represents both the material being modeled and a visualization area in the SVSOLID CAD workspace A region will have geometric shapes that define its material boundaries Also other modeling objects including features water tables text and line
38. lick on the point to finish the shape A line is now drawn from 6 0 to 0 0 and the shape is automatically completed by SVSOLID with a line from 0 0 back to the start point 0 3 If the geometry has been entered correctly the shape should look as follows C NOTE If a mistake was made during the input of the coordinate points for a shape select a shape with the mouse and select Edit gt Delete from the menu This will remove the entire shape from the region To edit the shape use the Region Properties dialog Specify Boundary Conditions Model gt Boundaries Boundary conditions must be applied for all region points Once a boundary condition is applied for a boundary point it defines the starting point for that particular boundary condition The boundary condition will then extend over subsequent line segments around the edge of the region in the direction in which the region shape was originally entered Boundary conditions remain in effect around a shape until re defined The user may not define two different boundary conditions over the same line segment More information on boundary conditions can be found in Menu System Model Menu Boundary Conditions 2D Boundary Conditions in y our User s Manual SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 33 of 55 Now that the model geometry has been successfully defined the next step is to specify the boundary conditions A suction of 20 kPa is requi
39. m wide flexible impervious cover in 2D is considered Since the cover is symmetrical the portion to the right of the centerline will be modeled A material region 3m deep and 12m wide is used Specified suction Flexible cover or concrete slab or boundary flux 0 E 1 Flux 0 E 2 2 Constant suction 400 kPa 3 0 3 6 9 12 Distance from centre of cover or slab m Material Properties Volumetric water content at saturation gs m Sat Suction 0 1 kPa py 3000 kPa SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 30 of 55 tress Material Properties Total Unit Weight gt 17 2 kN m2 Initial Void Ratio eO eling Index Cs eling Index Cm isson s Sw Sw Po m 1 Coefficient of earth pressure at rest Ko Solution Outline The manual iteration method involves a number of steps to arrive at the final displacements These example models are included in the SVFLUX and SVSOLID model files for reference under the Project Name of SlabOnGround The M odel Name is indicated in parentheses l Initial SVFLUX seepage analysis Shrink Initial 2 SVFLUX transient seepage analysis Shrink Transient 3 SVSOLID stress deformation analysis Shrink Day 5 4 2 Initial SVFLUX Seepage Analysis The purpose of the initial SVFLUX seepage analysis is to get an initial head profile to use as initial conditions for the SVFLUX transient seepage and to get an initial pore water pressure profile
40. odel gt Boundaries Now that the region and the model geometry have been successfully imported the next step is to specify the boundary conditions A zero flux condition is required at the ground surface beneath the cover while a suction of 400 kPa exists at the bottom of the material region The suction values must be converted to head values for the SVFLUX solver An evaporation rate of 10 mm day is represented by the normal flux condition over the uncovered ground surface The steps for specifying the boundary conditions are as follows l Select the Ground region in the drawing space 2 Fromthe menu select Model gt Boundaries gt Boundary Conditions The boundary conditions dialog will open By default the first boundary segment will be given a Zero Flux condition 3 Select the point 0 3 from the list 4 From the Boundary Condition drop down select a Head Expression Boundary Condition This will cause the Expression box to be enabled In the Expression box enter a head of 43 787 This head value equal to a suction of 400 kPa Select the point 12 3 from the list From the Boundary Condition drop down select a Zero Flux Boundary Condition Select the point 12 0 from the list SO UON GBA From the Boundary Condition drop down select a Normal Flux Boundary Condition This will cause the Expression box to be enabled 10 In the Expression box enter a flux of 20 01 m day equal to an evaporation of 10 mm day
41. odel solution ii Output M anager Standard finite element files written out for visualization in ACUMESH or for inputting to other finite element packages PLOT MANAGER Model gt Reporting gt Plot Manager There are numerous types of plots that can be specified to visualize the computed results from the model A few plots will be generated for this tutorial example model including a plot showing vertical stress contours the deformed mesh and displacement vectors 1 Open the Plot Manager dialog by selecting Model gt Reporting gt Plot Manager from the menu SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 26 of 55 ox Plots Point Area Volume Min Max Other Le e l a l a l E Vertical Stress sz Display Sav Displl uw Display and Sav Displ2 vw Display and Sav Deformed Mesh Deformed Mesh Display and Sav xZ Mesh x My uz Myw Display and Sav s New Plot A zal 3 g zez c Delete Properties Multiple Update a Add Defaults Default Piot DK Cancel 2 The toolbar at the bottom left corner of the dialog contains a button for each plot type Click on the Contour button to begin adding the first contour plot The Plot Properties dialog will open Enter the title Vertical Stress Select s as the variable to plot from the drop down for the contour plot of the vertical stress Move to the Projection tab Select Plane as the Projection Option Select Y f
42. of plot that can be specified to visualize the results of the model A few contour and elevation plots will be generated for this tutorial example model Open the Plot Manager dialog by selecting Model gt Plot Manager from the menu m The toolbar at the bottom left corner of the dialog contains a button for each plot type Click on the Contour button to begin adding the first contour plot The Plot Properties dialog will open Enter the title PWP total Select uw as the variable to plot from the drop down Move to the Update Method tab Enter a Start Time of 0 a Time Increment of 0 5 and an End Time of 5 days Click OK to close the dialog and add the plot to the list O0 ie ce ODA ee O9 Repeat these steps 2 to 8 to create the suggested contour plots listed below Note that the plots are not required for model solution but are useful for visualization e Click on the Elevation button to begin adding the first elevation plot The Plot Properties dialog will open 10 Enter the title Surface Initial ll Select uw as the variable to plot from the drop down 12 Move to the Time tab 13 Enter a Start Time of 0 14 Move to the Range tab 15 Enter the values X 0 YI 0 X2 12 Y2 0 16 Click OK to close the dialog and add the plot to the list 17 Repeat these steps 10 to 16 to create the suggested elevation plots listed below Note that the plots are not required for model solution but are usef
43. of this tutorial 16 Press OK to close the Materials Manager dialog NOTE The negative sign for the body load indicates that the vertical body load will act in a downward direction Each region will cut through all the layers in a model creating a separate block in each layer Each block can be assigned a material or left as void A void area is assumed to be an air space In this model all blocks will be assigned a material l 2 gel ON SUE cbe O9 9 10 Select Slope in the Region Selector Select Model Materials Material Layers from the menu to open the Material Layers dialog Select the Till material from the drop down for Layer 2 Select the Till material from the drop down for Layer 1 Close the dialog using the OK button Select Pillar in the Region Selector Select Model gt Materials gt Material Layers from the menu to open the Material Layers dialog Select the Concrete material from the drop down for Layer 2 Select the Till material from the drop down for Layer 1 Close the dialog using the OK button e Specify Model Output Two levels of output may be specified i output graphs contour plots fluxes etc which are displayed during model solution and ii output which is written to a standard finite element file for viewing with ACUM ESH software Output is specified in the following two dialogs in the software i Plot Manager Output displayed during m
44. own below into the dialog x minimum 5 y minimum 8 x maximum 17 y maximum 5 3 Click OK to close the dialog b Enter Geometry Model Geometry The shape that defines the material region will now be created Note that when drawing geometric shapes the region that is current in the region selector is the region the geometry will be added The Region Selector is at the top of the workspace Region Geometry The ground shape can be drawn using the mouse or the data points can be pasted into the Region Properties dialog SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 32 of 55 Open the Regions dialog by selecting Model gt Geometry gt Regions from the menu Change the first region name from R1 to Ground This can be done by highlighting the name and typing new text Select Draw gt Model Geometry gt Polygon Region from the menu The cursor will now be changed to cross hairs Move the cursor near 0 3 in the drawing space You can view the coordinates for the current position of the mouse in the status bar just below the drawing space To select the point as part of the shape left click on the point Now move the cursor near 6 3 and then left click on the point A line is now drawn from 0 3 to 6 3 Refer to the geometry table above and add the remaining points To add the last point move the cursor near the point 0 0 and right click snapping the cursor to the point Double c
45. red at the ground surface while a suction of 400 kPa exists at the bottom of the material region The suction values must be converted to head values for the SVFLUX computer program The steps for specifying the boundary conditions are thus l Select the Ground region in the drawing space 2 From the menu select Model gt Boundaries gt Boundary Conditions The Boundary Conditions dialog will open By default the first boundary segment will be given a Zero Flux condition 3 Select the point 0 3 from the list 4 From the Boundary Condition drop down select a Head Expression Boundary Condition This will cause the Expression box to be enabled 5 In the Expression box enter a head of 43 787 6 Select the point 12 3 from the list 7 From the Boundary Condition drop down select a Zero Flux Boundary Condition 8 Select the point 12 0 from the list 9 From the Boundary Condition drop down select a Head Expression Boundary Condition This will cause the Expression box to be enabled 10 In the Expression box enter a head of 2 039 11 Select the point 0 0 from the list 12 From the Boundary Condition drop down select a Zero Flux Boundary Condition 13 Click OK to save the input Boundary Conditions and return to the workspace NOTE The Continue boundary condition indicates that the previously defined boundary condition will apply to the current boundary segment d Apply Material Properties Model gt Ma
46. red region shape left click on the point Now move the cursor near 5 38 and then left click on the point A line is now drawn from coordinates 5 41 to 5 38 Refer to the geometry table at the beginning of this tutorial and add the remaining points To add the last point move the cursor near the coordinate point 5 43 and right click snapping the cursor to the point Then double click on the point to finish the shape A line is now drawn from 12 43 to 5 43 and the shape is automatically completed in SVSOLID by drawing a line from 5 43 back to the starting point 5 41 e Define the Seam The instructions below explain the use of the mouse to create the seam region 10 11 12 13 14 15 16 17 18 Select Seam as the region by going to Model gt Geometry gt Regions and clicking on Seam Press OK to close the dialog Select Draw gt Model Geometry gt Polygon Region from the menu The cursor will now be changed to cross hairs Move the cursor near to coordinates 5 38 in the drawing space You can view the coordinates for the current position of the mouse in the status bar just below the workspace To select the point as part of the desired region shape left click on the point Now move the cursor near to coordinates 8 37 and then left click on the point A line is now drawn from coordinates 5 38 to 8 37 Refer to the geometry table at the beginning of this tutorial and add the remaining points
47. rom the Coordinate Direction drop down O0 xb 9v mo ee OM Enter 10 in the Coordinate field This will generate a 2D slice at Y 10m on which the stress contours will be plotted 9 Click OK to close the dialog and add the plot to the list 10 Repeat steps 2 to 9 to create the plots shown in the following screen shot above 11 Click OK to close the Plot Manager and return to the workspace f Run Model Solve Analyze The model is now ready for the analysis to be performed Select Solve gt Analyze from the menu This action will write a descriptor file and open the SVSOLID solver The solver will automatically begin solving the model g Visualize Results Window AcuMesh The results for the current model may be visualized by selecting the Open ACUM ESH Window gt ACUMESH menu option 3 2 Results and Discussion After the computations are complete the results will be displayed using the dialog of thumbnail plots within the SVSOLID solver It is possible to right click the mouse and select the Maximize to enlarge any of the thumbnail plots This section will give a brief description of each plot that was generated SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 27 of 55 When the computations associated with the analysis are complete it is possible to also visualize output plots using ACUM ESH In order to view plots in ACUM ESH select Window gt ACUMESH from the menu Stress Contours sy kPa
48. s can be seen without them Define at least one plot dialog from the Suggested Plots table below Refer to the section Specify SVELUX Transient Analysis Plots earlier in this tutorial for instructions on adding plots Suggested Plots Plot Type Tite Variae Range Contour Vertical Stress y oo Comou Horizontal stress sx Contour Pore water Pressure uw Contour Suction suctave Contour MemSuss a o Contour VoidRaio vw Comow Youngs Modus E Contour HMohhs Hms Contour Vertical Displacement_ v Vet Displacement wv Mesh FiaMesh DefrmdMeh h Run Model Solve Analyze The next step is to analyze the model Select Solve gt Analyze from the menu This action will write the descriptor files and open the SVSOLID solver The solver will automatically begin solving the model and the Run Log dialog will open in SVSOLID There are three pde files that will be created 1 SlabOnGround ED Day5 BATCH pde 2 SlabOnGround ED DayS5 pde 3 SlabOnGround ED Day5 Summary pde The Batch file will call the other two files in sequence and the data in this files will be solved automatically When the solver has finished running 4 Press OK for the Batch Done message 5 Click the Read File button on the Run Log in SVSOLID dialog to record
49. section Defining the Transient SVFLUX M odel Importing Geometry c Specify Initial Conditions Model Initial Conditions The next step in defining the model is to specify the settings that will be used for the model The Settings dialog will contain information about the current model System Analysis Units Initial Conditions Settings and more The data for the model is in metric so the units will remain metric The initial stress conditions initial pore water pressure conditions and final pore water pressure conditions will be defined l 2 3 4 To open the Settings dialog select Model gt Settings in the menu Select Consider PWP as the Analysis option Click OK to close the dialog To open the Initial Conditions dialog select Model gt Initial Conditions gt Settings from the menu SoOILvIsIOn systems LTD 2D Edge Drop of a Flexible Impervious Cover 45 of 55 5 6 Move to the Stress Strain tab Select K Loading as the Initial Stress Option A coefficient of earth pressure at rest K value will be entered later on the Material Properties dialog 10 11 Move to the Initial Pore Water Pressure tab Select Transfer File TRN as the Initial PWP Option Press the Browse button Then specify the path to the PWP trn file output by the Initial SVFLUX Analysis Click OK to close the dialog d Specify Boundary Conditions Model gt Boundaries Now that all of the regions and the model
50. sent Click the Add Regular button to open the Add Regular X Gridlines dialog Enter 0 for Start 2 for Increment Value and 20 for End Click Add to add the gridlines and close the dialog Move to the Y Grid Lines tab There will be default grid lines of 0 and 10 Click the Add Regular button to open the Add Regular Y Gridlines dialog Enter 0 for Start 4 for Increment Value and 20 for End Click Add to add the gridlines and close the dialog Now that the grid has been set up elevations must be specified for all the grid points SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 22 of 55 26 27 28 29 Select Surface 2 in the Surface Selector Select Model gt Geometry gt Surface Properties in the menu to open the Surface Properties dialog Enter 4 in the Set Nulls field Click the Set Nulls button and all the missing elevations will be set to 4m e Define Surface 3 Follow these steps to add the third surface to the model 30 31 32 33 34 35 36 37 To open the Surface dialog you may select Model gt Geometry gt Surfaces from the menu Click the New button to open the nsert Surfaces dialog Enter 1 as the Number of New Surfaces Select to place the new surface At The Top Select Copy Grid From An Existing Surface Select Surface 2 from the drop down Choose to Exclude the elevations Press OK to add the surface Surface 3 and its grid has now been added The next step
51. t click to snap the cursor to the point Double click on the point to finish the shape A line is now drawn from 20 20 to 0 20 and the shape is automatically finished by SVSOLID by drawing a line from 0 20 back to the starting point 0 0 e Define the Pillar Ensure that Pillar is current in the region selector Select Draw Model Geometry Region Circle from the menu The cursor will now be changed to cross hairs Move the cursor near 10 10 in the drawing space The coordinates of the current position the mouse can be seen in the status bar just below the drawing space To select a point as part of the shape hold the left click button on the point Drag the cursor in a X or Y direction and release the left click button once the mouse is 2m away from the initial point This will create a 2 meter radius for the circle This model consists of three surfaces with differing dimensions and grid densities By default every model initially has two surfaces e Define Surface 1 This surface is already present so the next step is to define the grid lines l 2 Select Surface 1 by going to Model gt Geometry gt Surfaces and clicking on Surface 1 Press OK to close the dialog Select Model gt Geometry gt Surface Properties in the menu to open the Surface Properties dialog Select Elevation Data from the Definition Options drop down Select the Elevations tab and click the Define Grid button to set up
52. terials The next step in defining the model is to enter the Material Properties for the material that will be used in the model l Open the Materials dialog by selecting Model gt Materials gt Manager from the menu 2 Click the New Material button to create a material 3 Name the new material ED Initial 4 Select the New Material and click Properties to open the Material Properties dialog NOTE When a new material is created y ou can specify the display color of the material using the Fill Color box on the Material Properties menu Any region that has a material assigned will display the fill color soILVISION systems utp 2D Edge Drop of a Flexible Impervious Cover 34 of 55 5 Moveto the Hydraulic Conductivity tab 6 Refer to the data provided at the beginning of this tutorial Enter the k value of 1 000E 08 m s e Specify Model Output Two levels of output may be specified i output graphs contour plots fluxes etc which are displayed during model solution and ii output which is written to a standard finite element file for viewing with ACUMESH software Output is specified in the following two dialogs in the software i Plot Manager Output displayed during model solution ii Output M anager Standard finite element files written out for visualization in ACUMESH or for inputting to other finite element packages PLOT MANAGER Model gt Reporting gt Plot Manager The next step is to specify the plots which
53. the grid for the selected SOILVISION SYSTEMS LTD A Three Dimensional Example M odel 21 of 55 surface There will be default grid lines of 0 and 10 present Click the Add Regular button to open the Add Regular X gridlines dialog Enter 5 for Start 5 for Increment Value and 25 for End Click Add to add the gridlines and close the dialog Move to the Y Grid Lines tab and repeat steps 4 to 6 for the Y gridlines Elevations must be specified for all the grid points Now that the grid has been set up 10 11 12 13 14 Select Surface 1 in the Surface Selector Select Model gt Geometry gt Surface Properties in the menu to open the Surface Properties dialog Select the Elevations tab Enter 0 in the Set Nulls field Click on the Set Nulls button and all the missing elevations will be set to 0 e Define Surface 2 This surface is already present The extent of this grid are smaller than for Surface 1 and the grid is denser The Surface 2 grid also has different densities in the X and Y directions 15 16 17 18 19 20 21 22 23 24 25 Select Surface 2 in the Surface Selector Select Model Geometry Surface Properties in the menu to open the Surface Properties dialog Select Elevation Data from the Definition Options drop down Select the Elevations tab and click the Define Grid button to set up the grid for the selected surface There will be default grid lines of 0 and 10 pre
54. tions dialog should open once the Create Model dialog is closed 2 Enter 1 for both the horizontal and vertical grid spacing 3 Click OK to close the dialog SOILVISION SYSTEMS LTD A Two Dimensional Example M odel 8 of 55 Options must be selected here in order to specify a water table as the initial pore water pressure conditions Drawing of the water table is explained later in this tutorial l Open the Settings dialog by selecting Model gt Settings in the workspace menu Select Consider PWP as the Analysis option Press OK to close the dialog Open the Initial Conditions dialog by selecting Model gt Initial Conditions gt Settings Move to the Pore Water Pressure tab Select Draw Water Table as the Initial PWP Option sk Oy a bes co I Click OK to close the dialog b Enter Geometry Model gt Geometry A region in SVSOLID forms the basic building block for a model A region represents both a physical portion of material being modeled and a visualization area in the SVSOLID CAD workspace A region forms a geometric shape that define the material boundaries Also other modeling objects including features water tables text and line art can be defined on any given region The model being used in this tutorial is divided into three regions which are named Ground Seam and Water Table The first two regions will have one of the materials previously defined specified as its material properties The third region will be used
55. to use as initial conditions for the SVSOLID stress deformation analy ses Project SlabOnGround Model Shrink Initial 4 2 4 Model Setup In order to set up the model described in the preceding section the following steps will be required The steps fall under the general categories of a Create model b Enter geometry Specify boundary conditions d Apply material properties Specify model output f Run model g Visualize results a Create Model The following steps are required to create the model SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 31 of 55 1 Open the SVOFFICE Manager dialog Select ALL under the Applications combo box and ALL for the Model Origin combo box Select the project called UserTutorial from the list of projects 3x 299 R9 Create a new model called UserED Initial by pressing the New button next to the list of models The new model will be automatically added under the recently created UserTutorial project 5 Select the following Application SVFLUX System 2D Vertical Type Steady State Units Metric The user should also set the World Coordinate System to ensure that the model will fit in the drawing space The World Coordinate Sy stem settings can be set under the World Coordinate System tab on the Create Model dialog l Access the World Coordinate System tab on the Create New Model dialog 2 Enter the World Coordinates System coordinates sh
56. ul for visualization 18 Click OK to close the Plot Manager and return to the workspace Suggested Plots Plot Type Tite Variable Time Range Lf Start Ine End SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 4l of 55 Contour PWPToal uw 0 Contour Head Total n o os Contour PWPDay3 uw 3 Elevation Surface Initial uw o Elevation SufaeDayl ww 1 Elevation SufaeDay3 uw 3 uw s uw o ww i ae ee ING tie post Los s 5 BEEN ENS _ 0 to 12 0 09 to 12 0 _ 00 to 12 0 _ 09 to 12 0 Depth Initial EE OUTPUT MANAGER Model Reporting Output Manager Two transfer files will be generated for this tutorial example model a transfer file of pore water pressures and an ACUMESH file for use in the ACUMESH visualization software l Openthe Output Manager dialog by selecting Model gt Reporting gt Output Manager from the menu 2 The toolbar at the bottom left corner of the dialog contains a button for each output file type Click on the SVSOLID button to add the pore water pressure output file The Output File Properties dialog will open 3 Enter the title PWPT 4 Click OK to close the dialog and add the output file to the list 5 Click OK to close the Output Manager and return to the workspace f Run
57. will be generated by the finite element solver Both the graphs displayed by the FlexPDE solver as well as the output generated for the subsequent analyses must be specified l Open the Plot Manager dialog by selecting Model gt Reporting gt Plot Manager from the menu 2x Plots Point Piezometer Area Volume Min Max Flux Sections Boundary Flux Climate Review Boundary Other title Variable Restriction Solver Option G S Display and Sav Ae Ss Display and Sav p New Plot A z Bl Copy Delete Properties Multiple Update QQ L Fot settings Add Detauts Default Piot ok Cae 2 The toolbar at the bottom left corner of the dialog contains a button for each plot type Click on the Contour button to begin adding the first contour plot The Plot Properties dialog will open 3 Enter the title head 4 Select h as the variable to plot from the drop down 5 Click OK to close the dialog and add the plot to the list 6 Click OK to close the Plot Manager and return to the workspace OUTPUT MANAGER Two output files will be generated for this tutorial example model a file of pore water pressures and a file of heads SOILVISION SYSTEMS UTD 2D Edge Drop of a Flexible Impervious Cover 35 of 55 1 Open the Output Manager dialog by selecting Model gt Reporting gt Output Manager from the menu 2 The toolbar at the bottom left corner of the dialog conta

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