! steps of TM_INCR
TIME,TM! Time value
F,272,FY,FORCE(TM)! Time-varying force (at node 272, FY)
NSEL,...! Select nodes on pressure surface
SF,ALL,PRES,PRESSURE(TM)! Time-varying pressure
NSEL,ALL! Activate all nodes
NSEL,...! Select nodes for temperature specification
BF,ALL,TEMP,TEMP(TM)! Time-varying temperature
NSEL,ALL! Activate all nodes
SOLVE! Initiate solution calculations
*ENDDOSee the Command Reference for discussions of the DO,TIME,F,NSEL,SF,BF, and ENDDO commands.
You can change the time increment (TM_INCR parameter) very easily with this method. With other
methods, changing the time increment for such complex load histories would be quite cumbersome.
5.7. Terminating a Running Job
You can terminate a running job, if necessary, with the help of system functions such as a system break,
issuing a kill signal, or deleting the entry in the batch queue. This is not the preferred method for
nonlinear analyses, because a job terminated in this manner cannot be restarted.
To terminate a nonlinear analysis "cleanly" on a multitasking operating system, create an abort file,
named Jobname.ABT (or, on some case-sensitive systems,jobname.abt), containing the word
nonlinear on the first line, starting in column 1. At the start of an equilibrium iteration, if the program
finds such a file in the working directory, the analysis stops and can be restarted at a later time.
NoteIf commands are being read using a file specified via the /INPUT command (Main Menu>
Preprocessor> Material Props> Material Library, or Utility Menu> File> Read Input from),
the abort file terminates the solution, but the program continues to read commands from
the specified input file. Any postprocessing commands included in the input file execute.5.8. Restarting an Analysis
Occasionally, you may need to restart an analysis after the initial run has been completed. Three different
restart procedures are available:
5.8.1. Multiframe Restart
5.8.2. Modal Analysis Restart
5.8.3. VT Accelerator Re-run
The following examples illustrat e instances where a restart may be necessary:
- More load steps must be added to the analysis (multiframe restart).
- There are additional loading conditions in a linear static analysis or additional portions of a time-history
loading curve in a transient analysis (multiframe restart). - To recover from a convergence failure in a nonlinear analysis (multiframe restart).
- To do a linear perturbation analysis (multiframe restart). See General Procedure for Linear Perturbation
Analysis for details.
Release 15.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential informationRestarting an Analysis