OptiStruct is a proven, modern structural solver with comprehensive, accurate and scalable solutions for linear and nonlinear
analyses across statics and dynamics, vibrations, acoustics, fatigue, heat transfer, and multiphysics disciplines.
The .#.h3d files are compressed binary files, containing model, analysis, and optimization result data. They can be used to
post-process results in HyperView or when using the HyperView Player.
The .contgap.fem file is an ASCII format file. It is used to visualize the internally created contact elements. The contact elements are presented
as CGAPG elements.
The .h3d file is a compressed binary file, containing both model and result data. It can be used to post-process results in
HyperView or when using the HyperView Player.
A compressed binary file, containing both model and result data. It can be used to post-process results in HyperView or when using the HyperView Player.
A compressed binary file, containing both model and result data. It can be used to post-process results in HyperView or when using the HyperView Player.
A compressed binary file containing both model and result data from a multibody dynamics analysis. It can be used
to post-process results in HyperView.
A compressed binary file, containing both model and result data. It is output when either NLMON Subcase/Bulk Entry pair or PARAM,NLMON is specified in the input file.
The _s#.h3d file is a compressed binary file, containing both model and result data. It can be used to post-process results in
HyperView or using the HyperView Player.
The _topol.h3d file is a compressed binary file containing both model and result data. It can be used to post-process topology (density)
sensitivity in HyperView.
The <BODY_NAME>.h3d file is a compressed binary file from a multibody dynamics analysis that uses flexible bodies defined through a
PFBODY Bulk Data Entry.
The tables in this section summarize the results output for different analysis types. They show the formats available
for each result and the I/O Option Entry that controls the output of the result.
The OptiStruct Example Guide is a collection of solved examples for various solution sequences and optimization types and provides
you with examples of the real-world applications and capabilities of OptiStruct.
This file is created by default for any nonlinear run.
File Contents
This file contains, for each nonlinear subcase, a table of the load increments,
cutback information, number of iterations for each load increment, and the values of
time increments and cutbacks and displacement results.
These displacement results pick the maximum value across all degrees of freedom, by
default. Specific Grid and degree of freedom at which displacement results should be
printed can be identified using the GRID and
DOF parameters on the NLMON Bulk Data
Entry.
File Format
The following table format is used to print the monitoring information.
Name
Content
SUBCASE SID
Identification number of the Subcase for which the
information is printed.
INCREMENT
NUMBER
Identifies the load increment number.
CUTBACK
Identifies if there was a cutback at a particular
load increment.
"-"
Identifies that there is no cutback.
"C#"
Implies that a cutback occurred and “#” is a
counter for the number of cutbacks.
CONVERGED
Identifies if a particular step is converged or not.
ITER
CONT
Number of contact iterations for each load
increment.
EQUI
Number of equilibrium iterations for each load
increment.
TOTL
Total number of iterations for each load increment.
TIME
INCR
Identifies the current time/load increment.
SUBCASE TIME
Identifies the current time/load inside a subcase
(it is 0.0 at the beginning of a continued
subcase).
CURRENT TIME
Identifies the current time/load for the entire
model (continued subcases begin at the time at the
end of the previous subcase).
LOAD FACTOR
This is the load factor. It can be considered as the
subcase time normalized over the range 0.0 to
1.0.
MONITOR
DISP
Displacement output for each load increment. This
value is output in the global coordinate
system.
GRID
GRID identification number specified on the
NLMON Bulk Data Entry.
DOF
Degree of freedom specified on the
NLMON Bulk Data Entry.