Mechanical APDL Basic Analysis Guide - Ansys

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Chapter 5: Solution /solu antyp,,rest,1,3 !Restart the analysis at load step 1, !substep 3 solve rescontrol,file_summary finish /post1 set,last prnsol presol finish The sample input listing below shows how to terminate a load step at a particular substep, then continue with the next load step. /solu antype,,rest,1,3,endstep !End load step 1 at substep 3 !when time (load factor) = 0.6125 !ldstep = 1, substep = 3, load solve !execute ENDSTEP, loads are !rescaled to time = 0.6125 rescontrol,file_summary bfe,1,temp,1,2 !apply higher loads, bfe,2,temp,1,6 solve !execute solve to advance load !factor from previous !time = 0.6125 to time = 1.6125 /post1 set,last presol finish The sample input listing below shows how to restart an analysis with old and new parameters. /title, Multiframe Restart with Tabular Load. /prep7 et,1,42 ! Build model n,1,0.0,0.0 n,2,0.0,0.5 n,3,0.0,1.0 n,4,1.0,0.0 n,5,1.0,0.5 n,6,1.0,1.0 e, 1,4,5,2 e, 2,5,6,3 mp,ex,1,1000.0 mp,nuxy,1,0.3 mp,alpx,1,1.e-4 d,1,all d,2,ux,0.0 d,3,ux,0.0 d,4,uy,0.0 *dim,ftbl,table,4,1,,time ! Make tabular point load ftbl(1,0)=1,2,3,4 ftbl(1,1)=2.5,5.0,7.5,10.0 nsel,all f,all,fx,%ftbl% ! Apply it to all nodes flist /solu rescont,,all,all ! Save all substeps for possible restart nlgeo,on time,4 DELTIM,1 outres,all,all solve ! Solve with point loads and the *.RDB file is saved ! at the moment. The parameterized tabular point load ! FTBL is also saved into *.RDB 118 Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates.
*dim,temtbl,table,4,1,,time ! Define table TEMTBL and use it for body load: temperature temtbl(1,0)=1,2,3,4 temtbl(1,1)=250,500.0,750,1000. ! bf,all,TEMP,%temtbl% ! May use this to apply the body load table ! bflist parsave,all,moreload ! Save all the <strong>APDL</strong> parameters and tables to file: moreload ! NOTE: *.RDB does not have information of table TEMTBL. fini /clear, nostart /solu ANTYPE,,RESTART,1,3,endstep ! Do restart ENDSTEP because we want to apply TEMTBL at ! TIME = 3.5 (LDSTEP=1,SUBSTEP=3) because we want to ! Apply the temperature load from TIME=3.5 onwards. ! Here, RESTART has resumed *.RDB database where the ! Table FTBL is saved. solve ! Activate ENDSTEP parresu,,moreload ! For further load step, we want to apply table TEMTBL ! as body force. NOTE: table TEMTBL is not in *.RDB. Therefore, ! we have to use PARRESU command. <strong>APDL</strong> file "moreload" is ! saved earlier. *status ! List all the ADPL information available at this point bf,all,TEMP,%temtbl% ! Apply temperature table load TEMTBL bflist time,4 ! Solve up to TIME = 4.0 because the load step ENDSTEP only ! carries up to TIME = 3.5 solve fini /post1 set,last prdis prrsol fini The sample below demonstrates a restart after changing boundary conditions. /prep7 et,1,21 r,1,1,1,1,1,1,1 n,1 e,1 fini /solu antyp,trans timint,off time,.1 nsub,2 kbc,0 d,1,ux,100 ! to apply initial velocity (IC command is preferred) solve timint,on ddele,1,ux ! this requires special handling by multi-frame restart ! if a reaction force exists at this dof, replace it with an equal ! force using the endstop option time,.2 nsub,5 rescontrol,define,all,1 ! request possible restart from any substep outres,nsol,1 solve fini /solu antyp,,restart,2,3 ! this command resumes the .rdb database created at the start of solution ! (restart from substep 3) ddele,1,ux ! re-specify boundary condition deleted during solution Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates. 5.9.1. Multiframe Restart 119
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ANSYS Mechanical APDL Basic Analysi
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Table of Contents 1. Getting Starte
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2.8.4.3. Define Material Properties
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7.2.1.6. Particle Flow and Charged
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10. Getting Started with Graphics .
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13.2.4.1.Turning Load Symbols and C
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20.8. Reviewing Contents of Binary
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List of Tables 2.1. DOF Constraints
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Chapter 1: Getting Started with ANS
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shown below define two element type
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You can choose constant, isotropic,
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You can save linear material proper
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Figure 1.4 Material Model Interface
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Figure 1.7 Data Input Dialog Box -
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The first example below is intended
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9. Click on OK. The dialog box clos
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1.1.4.9. Reading a Material Library
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If you are performing a static or f
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Chapter 2: Loading The primary obje
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Figure 2.2 Transient Load History C
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The arc-length method is an advance
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• Transferred solid loads will re
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Note If the node rotation angles th
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Figure 2.7 Scaling Temperature Cons
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Below are examples of some of the G
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Utility Menu> List> Loads> Surface>
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Figure 2.9 Example of Surface Load
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the shell, and 270° to 360° for t
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Below are examples of some of the G
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Figure 2.15 Transfers to BFK Loads
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CASE C: At least one BFV, BFA, or B
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A handy way to specify density so t
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For more information, see Initial S
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Boundary Condition Heat Flux Film C
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This problem consists of a thermal-
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2.6. Specifying Load Step Options A
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- All loads changed in later load s
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Main Menu> Preprocessor> Loads> Loa
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Command GUI Menu Paths Main Menu> S
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! Load Step 1: D, ... ! Loads SF, .
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Modeling> Create> Elements> Auto Nu
Page 83 and 84: Figure 2.22 Pretension Section Samp
Page 85 and 86: cylind,0.35,1, 0.75,1, 0,180 wpstyl
Page 87 and 88: 11. Select Utility Menu> PlotCtrls>
Page 89 and 90: 24. Select Utility Menu> Plot> Comp
Page 91 and 92: Chapter 3: Using the Function Tool
Page 93 and 94: Hint: A common error is a divide-by
Page 95 and 96: 3.3. Using the Function Loader When
Page 97 and 98: 2. Define the convection boundary c
Page 99 and 100: 7. Optional: Enter comments for thi
Page 101 and 102: 3.6.1. Graphing a Function From the
Page 103 and 104: Chapter 4: Initial State The term i
Page 105 and 106: inis,defi,,,1,,100,200,150 inis,def
Page 107 and 108: applies an equal stress of SX = 100
Page 109 and 110: 4.7.2. Example: Initial Stress Prob
Page 111 and 112: inis,defi,all,all,all,all,0.1,,, in
Page 113 and 114: Chapter 5: Solution In the solution
Page 115 and 116: Solver Typical Applications * In to
Page 117 and 118: used. Running the distributed spars
Page 119 and 120: With all iterative solvers, be part
Page 121 and 122: 5.3.3. Disk Space (I/O) and Postpro
Page 123 and 124: If your analysis is either static o
Page 125 and 126: Note Whether you make changes to on
Page 127 and 128: Figure 5.2 PGR File Options From th
Page 129 and 130: GUI: Main Menu> Solution> Current L
Page 131 and 132: Figure 5.3 Examples of Time-Varying
Page 133: Requirements for Performing an Anal
Page 137 and 138: 5.9.1.1.1. Multiframe Restart Limit
Page 139 and 140: prnsol finish 5.9.2. VT Accelerator
Page 141 and 142: 5.12. Stopping Solution After Matri
Page 143 and 144: Chapter 6: An Overview of Postproce
Page 145 and 146: each element. Derived data are also
Page 147 and 148: Chapter 7: The General Postprocesso
Page 149 and 150: Although not required for postproce
Page 151 and 152: The ETABLE command documentation li
Page 153 and 154: • Path plots • Reaction force d
Page 155 and 156: The PLETAB command contours data st
Page 157 and 158: PLDISP,1 ! Deformed shape superimpo
Page 159 and 160: 7.2.1.6. Particle Flow and Charged
Page 161 and 162: • Particle flow traces occasional
Page 163 and 164: The surfaces you create fall into t
Page 165 and 166: You can opt to archive all defined
Page 167 and 168: 19 41.811 51.777 .00000E+00 -66.760
Page 169 and 170: Sample PRETAB and SSUM Output *****
Page 171 and 172: 7.2.5. Mapping Results onto a Path
Page 173 and 174: Command(s): PDEF GUI: Main Menu> Ge
Page 175 and 176: To retrieve path information from a
Page 177 and 178: 7.2.6. Estimating Solution Error On
Page 179 and 180: Write Results - You can use the dat
Page 181 and 182: NOTE: When you append data to your
Page 183 and 184: EMF - Windows Enhanced Metafile For
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Figure 7.20 The PGR File Options Di
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7.4.8. Comparing Nodal Solutions Fr
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the effect of the rigid body rotati
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The SADD command (Main Menu> Genera
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To view correct mid-surface results
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To get usable results combine the r
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7.4.4. Mapping Results onto a Diffe
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• EMF (Main Menu> General Postpro
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7.4.8.1. Matching the Nodes The Mec
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7.4.8. Comparing Nodal Solutions Fr
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Chapter 8: The Time-History Postpro
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enables the alternate selections sh
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1. Click on the Add Data button. Re
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APPEND Appends data to previously s
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!derivative of variable 2 with resp
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The above command assumes that you
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When plotting complex data such as
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Sample Output from EXTREM time-hist
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5. Select the variables to be opera
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RESP requires two previously define
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Chapter 9: Selecting and Components
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Note Crossover commands for selecti
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would put UX and UZ constraints on
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The Command Reference describes the
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Chapter 10: Getting Started with Gr
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Remote Network Access Hidden Line R
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10.4.1. Adjusting Input Focus To en
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• If the environment variable SB_
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10.5.5. Erasing the Current Display
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Chapter 11: General Graphics Specif
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11.3.1. Changing the Viewing Direct
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11.4. Controlling Miscellaneous Tex
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11.4.3. Controlling the Location of
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Chapter 12: PowerGraphics Two metho
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The subgrid approach affects both t
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Chapter 13: Creating Geometry Displ
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Figure 13.1 Element Plot of SOLID65
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13.2.1.12. Vector Versus Raster Mod
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Figure 13.2 Create Best Quality Ima
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13.2.3.2. Choosing a Format for the
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Chapter 14: Creating Geometric Resu
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Figure 14.2 A Typical ANSYS Results
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• Changing the contour interval.
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14.5. Isosurface Techniques Isosurf
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Chapter 15: Creating Graphs If you
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Establishing separate Y-axis scales
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15.2.3.5. Defining the TIME (or, Fo
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Chapter 16: Annotation A common ste
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16.3. 3-D Annotation 3-D text and g
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Chapter 17: Animation Animation is
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• ANMODE (Utility Menu> PlotCtrls
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Figure 17.2 The Animation Controlle
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Note If you are doing animation fro
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Chapter 18: External Graphics Besid
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18.1.4. Exporting Graphics in UNIX
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Note The commands discussed in this
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18.3.6. Editing the Neutral Graphic
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Chapter 19: The Report Generator Th
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2. Specify a caption for the captur
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19.4.1.1. Creating a Custom Table I
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Table ID 46 47 48 Description Compo
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Button or Field DYNAMIC DATA REPORT
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The HTML tag to begin JavaScript co
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listingName A unique listing name a
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Chapter 20: File Management and Fil
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20.4. Text Versus Binary Files Depe
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Identifier ELEM EMAT ERR ESAV FATG
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20.4.3. File Compression Many file
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You can also redirect graphics outp
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Chapter 21: Memory Management and C
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21.3.3. Changing Database Space Fro
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Figure 21.4 Dividing Work Space ANS
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NUM_BUFR is the number of buffers p
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een chosen for efficient running of
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Index Symbols 3-D graphics devices,
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path plots, 142 POST26 graphs, 200
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fatigue graphs, 257 files, 277 focu
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material model interface, 8 materia
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multiframe, 117 restarting an analy
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WINDOW command, 227 Windows graphic
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