Mechanical APDL Basic Analysis Guide - Ansys
Mechanical APDL Basic Analysis Guide - Ansys Mechanical APDL Basic Analysis Guide - Ansys
Chapter 5: Solution • Advanced NL Each set of controls is logically grouped on a tab; the most basic controls appear on the first tab, with each subsequent tab providing more advanced controls. The Transient tab contains transient analysis controls; it is available only if you choose a transient analysis and remains grayed out when you choose a static analysis. Each of the controls on the Solution Controls dialog box corresponds to an ANSYS command. The table below illustrates the relationships between the tabs and the command functionality that you can access from each. Table 5.2 Relationships Between Tabs of the Solution Controls Dialog Box and Commands Solution Controls Dialog Box Tab What Does This Tab Let You Do? Basic Specify the type of analysis that you want to perform. Control various time settings. Specify the solution data that you want ANSYS to write to the database. Transient Specify transient options, such as transient effects and ramped vs. stepped loading. Specify damping options. Choose time integration method. Define integration parameters. Sol'n Options Specify the type of equation solver that you want to use. Specify parameters for performing a multiframe restart. Specify configuration details for distributed solvers Nonlinear Control nonlinear options, such as line search and solution predictor. Specify the maximum number of iterations that are allowed per substep. Indicate whether you want to include creep calculation in the analysis. Control bisections. Set convergence criteria. Advanced NL Specify analysis termination criteria. Control activation and termination of the arc-length method. What Commands Are Related to This Tab? ANTYPE, NLGEOM, TIME, AUTOTS, NSUBST, DELTIM, OUTRES TIMINT, KBC, ALPHAD, BETAD, TRNOPT, TINTP EQSLV, RESCONTROL, LNSRCH, PRED, NEQIT, RATE, CUTCONTROL, CNVTOL NCNV, ARCLEN, ARCTRM Once you are satisfied with the settings on the Basic tab, you do not need to progress through the remaining tabs unless you want to change some of the advanced controls. As soon as you click OK on any tab of the dialog box, the settings are applied to the ANSYS database and the dialog box closes. 108 Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates.
Note Whether you make changes to only one or to multiple tabbed pages, your changes are applied to the ANSYS database only when you click OK to close the dialog box. 5.4.3. Accessing More Information Discussions of the Solution Controls dialog box are included throughout the ANSYS manual set as applicable. For additional information, refer to the following: • Online help for the Solution Controls dialog box • "Structural Static Analysis" in the Structural Analysis Guide • "Transient Dynamic Analysis" in the Structural Analysis Guide • "Nonlinear Structural Analysis" in the Structural Analysis Guide 5.5. Using the PGR File to Store Data for Postprocessing In many analyses, a large amount of preliminary graphics information is created in order to obtain specific solution data. This information is often discarded when the final solution criteria is reached, even though you may request it later, during POST1 operations. You can have ANSYS save this information for rapid POST1 access by designating a PGR file. The PGR file is a dedicated ANSYS data storage format that saves this “precooked” data for rapid access in POST1. You can designate the items to be included in the PGR file during solution and gain up to a 10X performance benefit when you access the information during POST1. You can also create the PGR file in POST1, append new types of data to the PGR file, or create a new PGR file from any existing results file. You use a dedicated postprocessing tool, The Results Viewer, to access the information you store in the PGR file. The ANSYS results Viewer is a compact toolbar for viewing your analysis results. Although it is designed to display the information in your PGR file, you can use it to access any data from a valid results file (*.RST, *.RFL, *.RTH, *.RMG, etc.). For more information on the Results Viewer, see The Results Viewer Layout (p. 162) later on in this manual. 5.5.1. PGR File Capability You use the PGR file to rapidly access complex display data during postprocessing. This data is often converted from machine language information to display data (graphical representations) during the Solution phase of your analysis. Although this information is written to the results file as solution parameters, the process of reconverting it for viewing in POST1 can be time consuming. The PGR file preserves modeling and display data as a graphical object, allowing the data to be accessed and displayed in POST1 markedly faster. The PGR uses the existing ANSYS command structure to define, generate and access the data that will be saved and retrieved. See PGR Commands (p. 112) later in this chapter for links to the various PGR commands. Your PGR file will always contain the nodal solution data defined in the POUTRES command. You can also specify the following items for inclusion in your PGR file: • Stress • Structural nonlinear data • Contact data (3-D only) Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information of ANSYS, Inc. and its subsidiaries and affiliates. 5.5.1. PGR File Capability 109
- Page 73 and 74: - All loads changed in later load s
- Page 75 and 76: Main Menu> Preprocessor> Loads> Loa
- Page 77 and 78: Command GUI Menu Paths Main Menu> S
- Page 79 and 80: ! Load Step 1: D, ... ! Loads SF, .
- Page 81 and 82: 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: If your analysis is either static o
- 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 and 134: Requirements for Performing an Anal
- 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
- 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
Chapter 5: Solution<br />
• Advanced NL<br />
Each set of controls is logically grouped on a tab; the most basic controls appear on the first tab, with each<br />
subsequent tab providing more advanced controls. The Transient tab contains transient analysis controls;<br />
it is available only if you choose a transient analysis and remains grayed out when you choose a static analysis.<br />
Each of the controls on the Solution Controls dialog box corresponds to an ANSYS command. The table<br />
below illustrates the relationships between the tabs and the command functionality that you can access<br />
from each.<br />
Table 5.2 Relationships Between Tabs of the Solution Controls Dialog Box and Commands<br />
Solution Controls<br />
Dialog<br />
Box Tab<br />
What Does This Tab Let You Do?<br />
<strong>Basic</strong> Specify the type of analysis that you<br />
want to perform.<br />
Control various time settings.<br />
Specify the solution data that you want<br />
ANSYS to write to the database.<br />
Transient Specify transient options, such as transient<br />
effects and ramped vs. stepped<br />
loading.<br />
Specify damping options.<br />
Choose time integration method.<br />
Define integration parameters.<br />
Sol'n Options Specify the type of equation solver that<br />
you want to use.<br />
Specify parameters for performing a<br />
multiframe restart.<br />
Specify configuration details for distributed<br />
solvers<br />
Nonlinear Control nonlinear options, such as line<br />
search and solution predictor.<br />
Specify the maximum number of iterations<br />
that are allowed per substep.<br />
Indicate whether you want to include<br />
creep calculation in the analysis.<br />
Control bisections.<br />
Set convergence criteria.<br />
Advanced NL Specify analysis termination criteria.<br />
Control activation and termination of<br />
the arc-length method.<br />
What Commands Are<br />
Related to This Tab?<br />
ANTYPE, NLGEOM,<br />
TIME, AUTOTS,<br />
NSUBST, DELTIM,<br />
OUTRES<br />
TIMINT, KBC, ALPHAD,<br />
BETAD, TRNOPT, TINTP<br />
EQSLV, RESCONTROL,<br />
LNSRCH, PRED, NEQIT,<br />
RATE, CUTCONTROL,<br />
CNVTOL<br />
NCNV, ARCLEN,<br />
ARCTRM<br />
Once you are satisfied with the settings on the <strong>Basic</strong> tab, you do not need to progress through the remaining<br />
tabs unless you want to change some of the advanced controls. As soon as you click OK on any tab of the<br />
dialog box, the settings are applied to the ANSYS database and the dialog box closes.<br />
108<br />
Release 13.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information<br />
of ANSYS, Inc. and its subsidiaries and affiliates.
Change language