Mechanical APDL Basic Analysis Guide - Ansys
Mechanical APDL Basic Analysis Guide - Ansys Mechanical APDL Basic Analysis Guide - Ansys
Chapter 7:The General Postprocessor (POST1) Integration results are in the active coordinate system (see the RSYS command). The type of results coordinate system must match the type used in the analysis. However, you may translate and rotate forces and moments as needed. You use the *GET command (Utility Menu> Parameters> Get Scalar Data) to retrieve the results. 7.2.4. Listing Results in Tabular Form An effective way of documenting analysis results (for reports, presentations, etc.) is to produce tabular listings in POST1. Listing options are available for nodal and element solution data, reaction data, element table data, and more. 7.2.4.1. Listing Nodal and Element Solution Data 7.2.4.2. Listing Reaction Loads and Applied Loads 7.2.4.3. Listing Element Table Data 7.2.4.4. Other Listings 7.2.4.5. Sorting Nodes and Elements 7.2.4.6. Customizing Your Tabular Listings 7.2.4.1. Listing Nodal and Element Solution Data To list specified nodal solution data (primary as well as derived), use either of the following: Command(s): PRNSOL GUI: Main Menu> General Postproc> List Results> Nodal Solution To list specified results for selected elements, use one of these methods Command(s): PRESOL GUI: Main Menu> General Postproc> List Results> Element Solution To obtain line element solution printout, specify the ELEM option with PRESOL. The program will list all applicable element results for the selected elements. Sample Listing of PRNSOL,S 150 PRINT S NODAL SOLUTION PER NODE ***** POST1 NODAL STRESS LISTING ***** LOAD STEP= 5 SUBSTEP= 2 TIME= 1.0000 LOAD CASE= 0 THE FOLLOWING X,Y,Z VALUES ARE IN GLOBAL COORDINATES NODE SX SY SZ SXY SYZ SXZ 1 148.01 -294.54 .00000E+00 -56.256 .00000E+00 .00000E+00 2 144.89 -294.83 .00000E+00 56.841 .00000E+00 .00000E+00 3 241.84 73.743 .00000E+00 -46.365 .00000E+00 .00000E+00 4 401.98 -18.212 .00000E+00 -34.299 .00000E+00 .00000E+00 5 468.15 -27.171 .00000E+00 .48669E-01 .00000E+00 .00000E+00 6 401.46 -18.183 .00000E+00 34.393 .00000E+00 .00000E+00 7 239.90 73.614 .00000E+00 46.704 .00000E+00 .00000E+00 8 -84.741 -39.533 .00000E+00 39.089 .00000E+00 .00000E+00 9 3.2868 -227.26 .00000E+00 68.563 .00000E+00 .00000E+00 10 -33.232 -99.614 .00000E+00 59.686 .00000E+00 .00000E+00 11 -520.81 -251.12 .00000E+00 .65232E-01 .00000E+00 .00000E+00 12 -160.58 -11.236 .00000E+00 40.463 .00000E+00 .00000E+00 13 -378.55 55.443 .00000E+00 57.741 .00000E+00 .00000E+00 14 -85.022 -39.635 .00000E+00 -39.143 .00000E+00 .00000E+00 15 -378.87 55.460 .00000E+00 -57.637 .00000E+00 .00000E+00 16 -160.91 -11.141 .00000E+00 -40.452 .00000E+00 .00000E+00 17 -33.188 -99.790 .00000E+00 -59.722 .00000E+00 .00000E+00 18 3.1090 -227.24 .00000E+00 -68.279 .00000E+00 .00000E+00 Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates.
19 41.811 51.777 .00000E+00 -66.760 .00000E+00 .00000E+00 20 -81.004 9.3348 .00000E+00 -63.803 .00000E+00 .00000E+00 21 117.64 -5.8500 .00000E+00 -56.351 .00000E+00 .00000E+00 22 -128.21 30.986 .00000E+00 -68.019 .00000E+00 .00000E+00 23 154.69 -73.136 .00000E+00 .71142E-01 .00000E+00 .00000E+00 24 -127.64 -185.11 .00000E+00 .79422E-01 .00000E+00 .00000E+00 25 117.22 -5.7904 .00000E+00 56.517 .00000E+00 .00000E+00 26 -128.20 31.023 .00000E+00 68.191 .00000E+00 .00000E+00 27 41.558 51.533 .00000E+00 66.997 .00000E+00 .00000E+00 28 -80.975 9.1077 .00000E+00 63.877 .00000E+00 .00000E+00 MINIMUM VALUES NODE 11 2 1 18 1 1 VALUE -520.81 -294.83 .00000E+00 -68.279 .00000E+00 .00000E+00 MAXIMUM VALUES NODE 5 3 1 9 1 1 VALUE 468.15 73.743 .00000E+00 68.563 .00000E+00 .00000E+00 7.2.4.2. Listing Reaction Loads and Applied Loads You have several options in POST1 for listing reaction loads and applied loads. The PRRSOL command (Main Menu> General Postproc> List Results> Reaction Solu) lists reactions at constrained nodes in the selected set. The FORCE command dictates which component of the reaction data is listed: total (default), static, damping, or inertia. PRNLD (Main Menu> General Postproc> List Results> Nodal Loads) lists the summed element nodal loads for the selected nodes, except for any zero values. Listing reaction loads and applied loads is a good way to check equilibrium. It is always good practice to check a model's equilibrium after solution. That is, the sum of the applied loads in a given direction should equal the sum of the reactions in that direction. (If the sum of the reaction loads is not what you expect, check your loading to see if it was applied properly.) The presence of coupling or constraint equations can induce either an actual or apparent loss of equilibrium. Actual loss of load balance can occur for poorly specified couplings or constraint equations (a usually undesirable effect). Coupled sets created by CPINTF and constraint equations created by CEINTF or CERIG will in nearly all cases maintain actual equilibrium. Also, the sum of nodal forces for a DOF belonging to a constraint equation does not include the force passing through that equation, which affects both the individual nodal force and the nodal force totals. Other cases where you may see an apparent loss of equilibrium are: (a) 4-node shell elements where all 4 nodes do no lie in an exact flat plane, (b) elements with an elastic foundation specified, and (c) unconverged nonlinear solutions. See the Theory Reference for the Mechanical APDL and Mechanical Applications. Another useful command is FSUM. FSUM calculates and lists the force and moment summation for the selected set of nodes. Command(s): FSUM GUI: Main Menu> General Postproc> Nodal Calcs> Total Force Sum Sample FSUM Output *** NOTE *** Summations based on final geometry and will not agree with solution reactions. ***** SUMMATION OF TOTAL FORCES AND MOMENTS IN GLOBAL COORDINATES ***** FX = .1147202 FY = .7857315 FZ = .0000000E+00 MX = .0000000E+00 Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates. Sample FSUM Output 151
- Page 115 and 116: Solver Typical Applications * In to
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- Page 119 and 120: With all iterative solvers, be part
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- 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
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- Page 131 and 132: Figure 5.3 Examples of Time-Varying
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- Page 135 and 136: *dim,temtbl,table,4,1,,time ! Defin
- 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
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- 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: You can opt to archive all defined
- 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
- Page 185 and 186: Figure 7.20 The PGR File Options Di
- Page 187 and 188: 7.4.8. Comparing Nodal Solutions Fr
- Page 189 and 190: the effect of the rigid body rotati
- Page 191 and 192: The SADD command (Main Menu> Genera
- Page 193 and 194: To view correct mid-surface results
- Page 195 and 196: To get usable results combine the r
- Page 197 and 198: 7.4.4. Mapping Results onto a Diffe
- Page 199 and 200: • EMF (Main Menu> General Postpro
- Page 201 and 202: 7.4.8.1. Matching the Nodes The Mec
- Page 203 and 204: 7.4.8. Comparing Nodal Solutions Fr
- Page 205 and 206: Chapter 8: The Time-History Postpro
- Page 207 and 208: enables the alternate selections sh
- Page 209 and 210: 1. Click on the Add Data button. Re
- Page 211 and 212: APPEND Appends data to previously s
- Page 213 and 214: !derivative of variable 2 with resp
- Page 215 and 216: The above command assumes that you
Chapter 7:The General Postprocessor (POST1)<br />
Integration results are in the active coordinate system (see the RSYS command). The type of results coordinate<br />
system must match the type used in the analysis. However, you may translate and rotate forces and moments<br />
as needed. You use the *GET command (Utility Menu> Parameters> Get Scalar Data) to retrieve the results.<br />
7.2.4. Listing Results in Tabular Form<br />
An effective way of documenting analysis results (for reports, presentations, etc.) is to produce tabular listings<br />
in POST1. Listing options are available for nodal and element solution data, reaction data, element table<br />
data, and more.<br />
7.2.4.1. Listing Nodal and Element Solution Data<br />
7.2.4.2. Listing Reaction Loads and Applied Loads<br />
7.2.4.3. Listing Element Table Data<br />
7.2.4.4. Other Listings<br />
7.2.4.5. Sorting Nodes and Elements<br />
7.2.4.6. Customizing Your Tabular Listings<br />
7.2.4.1. Listing Nodal and Element Solution Data<br />
To list specified nodal solution data (primary as well as derived), use either of the following:<br />
Command(s): PRNSOL<br />
GUI: Main Menu> General Postproc> List Results> Nodal Solution<br />
To list specified results for selected elements, use one of these methods<br />
Command(s): PRESOL<br />
GUI: Main Menu> General Postproc> List Results> Element Solution<br />
To obtain line element solution printout, specify the ELEM option with PRESOL. The program will list all<br />
applicable element results for the selected elements.<br />
Sample Listing of PRNSOL,S<br />
150<br />
PRINT S NODAL SOLUTION PER NODE<br />
***** POST1 NODAL STRESS LISTING *****<br />
LOAD STEP= 5 SUBSTEP= 2<br />
TIME= 1.0000 LOAD CASE= 0<br />
THE FOLLOWING X,Y,Z VALUES ARE IN GLOBAL COORDINATES<br />
NODE SX SY SZ SXY SYZ SXZ<br />
1 148.01 -294.54 .00000E+00 -56.256 .00000E+00 .00000E+00<br />
2 144.89 -294.83 .00000E+00 56.841 .00000E+00 .00000E+00<br />
3 241.84 73.743 .00000E+00 -46.365 .00000E+00 .00000E+00<br />
4 401.98 -18.212 .00000E+00 -34.299 .00000E+00 .00000E+00<br />
5 468.15 -27.171 .00000E+00 .48669E-01 .00000E+00 .00000E+00<br />
6 401.46 -18.183 .00000E+00 34.393 .00000E+00 .00000E+00<br />
7 239.90 73.614 .00000E+00 46.704 .00000E+00 .00000E+00<br />
8 -84.741 -39.533 .00000E+00 39.089 .00000E+00 .00000E+00<br />
9 3.2868 -227.26 .00000E+00 68.563 .00000E+00 .00000E+00<br />
10 -33.232 -99.614 .00000E+00 59.686 .00000E+00 .00000E+00<br />
11 -520.81 -251.12 .00000E+00 .65232E-01 .00000E+00 .00000E+00<br />
12 -160.58 -11.236 .00000E+00 40.463 .00000E+00 .00000E+00<br />
13 -378.55 55.443 .00000E+00 57.741 .00000E+00 .00000E+00<br />
14 -85.022 -39.635 .00000E+00 -39.143 .00000E+00 .00000E+00<br />
15 -378.87 55.460 .00000E+00 -57.637 .00000E+00 .00000E+00<br />
16 -160.91 -11.141 .00000E+00 -40.452 .00000E+00 .00000E+00<br />
17 -33.188 -99.790 .00000E+00 -59.722 .00000E+00 .00000E+00<br />
18 3.1090 -227.24 .00000E+00 -68.279 .00000E+00 .00000E+00<br />
Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information<br />
of ANSYS, Inc. and its subsidiaries and affiliates.
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