RESTARTW

I/O Options Entry

RESTARTW - Control Parameter for Nonlinear Restart

Description

The RESTARTW entry can be used in the I/O Options section to define the control parameters for nonlinear restart.

Format

RESTARTW = n, option

Argument

Options

Description

Integer > 0

No default

Identifies the frequency of writing nonlinear restart analysis information files.

Restart analysis information files (*.rnl) are written after every n increment(s) and after the last increment for a nonlinear subcase. See comment 1.

option

COVER, NOCOV

Default = COVER

COVER: Whenever a new restart analysis information file (*.rnl) is written, the previous restart analysis information file is removed, unless it was written at the end of a subcase.

NOCOV: Previous restart analysis information files are not removed.

RESTARTW = 1

RESTARTW = 5, NOCOV

Comments

If RESTARTW entry is specified in the model, OptiStruct writes one restart model information file (*.rmd) and one or more restart analysis information files (*.rnl) to be used in a subsequent restart run. The .rnl and .rmd files are named in format <filename>_sub<i>_inc<j>.rnl and <filename>.rmd respectively, where <filename> is the filename of the input deck (prior to .fem), <i> (0<i<100000000) is the corresponding subcase ID and <j> (0<j<10000) is the corresponding increment number in the subcase.

2.	For information on restart of nonlinear analysis, refer to Restart of Nonlinear Analysis in the User's Guide.

3.	RESTARTW and RESTARTR entries can be specified together, except for the very first run (that is, the original job that is subsequently restarted), where only RESTARTW is allowed.

4.	RESTARTW is only supported for large displacement quasi-static and transient analysis.

5.	RESTARTW is not supported for model change (MODCHG).