Mechanical APDL Basic Analysis Guide

/solu

expass,on

outres,all,all

numexp,all,,,yes! Expand results for all substeps and calculate element results

solve

finish

/com,

/com, Time history post processing of displacement and reaction force results

/com,

/post26

n1=node(4,2,0)

n2=node(0,0,0)

nsol,2,n1,u,x,ux1

rforce,3,n2,f,x,fx1

prvar,2,3

finish

5.8.3.VT Accelerator Re-run

Once you have performed an analysis using the VT Accelerator option [STAOPT,VT or TRNOPT,VT ], you
may rerun the analysis; the number of iterations required to obtain the solution for all load steps and
substeps is greatly reduced. You can make the following types of changes to the model before rerunning:

• Modified or added/removed loads (constraints may not be changed, although their value may be modified)


• Materials and material properties


• Section and real constants


• Geometry, although the mesh connectivity must remain the same (i.e. the mesh may be morphed)

VT Accelerator allows you to effectively perform parametric studies of nonlinear and transient analyses
in a cost-effective manner (as well as to quickly re-run the model, which is typically necessary to get a
nonlinear model operational).

5.8.3.1.VT Accelerator Re-run Requirements

When rerunning a VT Accelerator analysis, the following files must be available from the initial run:

• Jobname.DB – the database file. It may be modified as listed in the previous section.


• Jobname.ESAV – Element saved data


• Jobname.RSX – Variational Technology results file

5.8.3.2.VT Accelerator Re-run Procedure

The procedure for rerunning a VT Accelerator analysis is as follows:

1. Enter the program and specify the same jobname that was used in the initial run with /FILNAME
   (Utility Menu> File> Change Jobname).


2. Resume the database file using RESUME (Utility Menu> File> Resume Jobname.db) and make any
   modifications to the data.

Release 15.0 - © SAS IP, Inc. All rights reserved. - Contains proprietary and confidential information

Solution