OUTPUT – Output Control
The OUTPUT command can be used in the I/O Options section to control the format of results output by OptiStruct and the creation of certain results files.
OUTPUT, keyword, frequency, option
Argument |
Options |
Description |
|
|
keyword |
See below |
See below |
|
|
frequency |
FIRST, LAST, |
FIRST: |
Output first iteration only. |
|
|
|
LAST: |
Output last iteration only. |
|
|
|
FL: |
Output first and last iterations. |
|
|
|
ALL: |
Output all iterations. |
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|
|
NONE: |
No output |
|
|
|
N: |
Output first and last iterations and every Nth iteration. If N=5, output occurs at iterations 0, 5, 10, 15, 20, etc., and the final iteration. |
|
|
|
blank: |
The default listed below for the given keyword. |
|
option |
See below |
See below |
|
Keyword |
Options |
Description |
Default frequency |
Files created or affected |
|
HM |
- |
Output analysis results in HyperMesh binary format. |
FL |
*.res |
|
H3D, HV |
- |
Output analysis results in Hyper3D format. |
FL |
*.h3d |
|
ASCII, OPTI, OS |
- |
Output analysis results in OptiStruct ASCII format. |
FL |
*.cstr, *.dens, *.disp, *.force, *.gpf, *.load, *.mpcf, *.spcf, *.strs |
|
NASTRAN, PUNCH |
- |
Output analysis results in Nastran punch format. |
FL |
.pch |
|
OP2, OUT2, OUTPUT2 |
<MODEL, NOMODEL, Default = MODEL |
Output analysis results in Nastran output2 format. MODEL / NOMODEL turns on / off the output of the model data to the file. See comment 12. |
FL |
*.op2 |
|
PATRAN, APATRAN |
- |
Output analysis results in Patran ASCII format. (APATRAN uses an alternate file naming convention, with the iteration number after the file extension). |
FL |
*.#.#.#.dis, *.#.#.dis, *.#.#.els, *.#.dis, *.#.els, *.#.#.dis.#, *.#.dis.#, *.#.els.#, *.dis.#, *.els.# |
|
NONE |
- |
Analysis results are not output in any of the formats listed above. |
- |
All of the above files |
|
DESIGN |
- |
Controls frequency of output for design results such as DENSITY, SHAPE, and THICKNESS |
ALL |
All files that design results are written to. |
|
PROPERTY |
<FILE, OUT, BOTH, NONE, or blank> Default = FILE |
Requests the output of the design variable definitions. FILE (Default) or blank: Updated property definitions are output to the .prop file. OUT: Updated property definitions are output to the .out file. BOTH: Updated property definitions are output to both the .out file and the .prop file. NONE: Updated property definitions are not output. |
L |
*.prop, *.out |
|
DESVAR |
<FILE, OUT, BOTH, NONE, or blank> Default = FILE |
Requests the output of the design variable values. FILE (Default) or blank: Updated property design variable values are output to the .prop file. OUT: Updated design variable values are output to the .out file. BOTH: Updated design variable values are output to both the .out file and the .prop file. NONE: Updated design variable values are not output. |
L |
*.prop, *.out |
|
HGFREQ |
- |
Frequency Analysis output presentation for HyperGraph. See comments 2 and 3. |
- |
*_freq.mvw, *_s#_a.frf, *_s#_d.frf, *_s#_v.frf |
|
HGTRANS |
- |
Transient Analysis output presentation for HyperGraph. See comments 2 and 3. |
- |
*_tran.mvw, *_s#_a.trn, *_s#_d.trn, *_s#_v.trn |
|
HGSENS |
<ALL, Default = NOSTRESS |
Sensitivity output presentation for HyperGraph. See comment 4 for details on options. |
FL |
*_sens.#.mvw, *.#.sens |
|
ASCSENS |
<ALL, Default = |
Topology sensitivity (response with respect to design element density) output in ASCII format. See comment 4 for details on options. |
FL |
*.#.asens |
|
MSSENS |
<ALL, Default = |
Sensitivity output in Microsoft Excel SYLK format. See comment 4 for details on options. |
FL |
*.#.slk |
|
H3DTOPOL |
<ALL, NOSTRESS, STRESS, or blank> Default = NOSTRESS |
Sensitivity output in H3D format for contouring of topology sensitivity. |
FL |
*_topol.#.h3d |
|
H3DGAUGE |
<ALL, NOSTRESS, STRESS, or blank> Default = NOSTRESS |
Sensitivity output in H3D format for contouring of shell thickness sensitivity. |
FL |
*_gauge.#.h3d |
|
HGHIST |
Integer < 32 Default = 31 |
Design history output presentation for HyperGraph. See comment 5 for details on options. |
- |
*_hist.mvw, *.hist |
|
DVGRID |
- |
Output of shape variable definitions to .dvgrid file. See comments 6 and 7 for details. |
- |
*.dvgrid |
|
MASSPROP |
- |
Controls output of Compliance, Center of Gravity, and Moment of Inertia tables to .out file. |
FL |
*.out |
|
HGEFFMASS |
- |
Effective mass is output as a HyperGraph bar chart. |
- |
*.mass, *_mass.mvw |
|
CMF |
<YES, NO> Default = YES |
Controls output of .cmf files. |
- |
*.HM.badel.cmf, *.HM.comp.cmf, *.HM.ent.cmf, *.HM.conn.cmf |
|
OSS |
<YES, NO> Default = YES |
Controls output of .oss file. |
- |
*.oss |
|
HTML |
<YES, NO> Default = YES |
Controls output of .html files. |
- |
*.html |
|
STAT |
<YES, NO> Default = YES |
Controls output of .stat file. See comment 10 for details. |
- |
*.stat |
Frequency does not apply for any of the keywords where a dash (-) is given as the default frequency in the keywords table above.
HGFREQ and HGTRANS are currently available for analysis only.
HGFREQ and HGTRANS will only use output requests where a Set ID is specified. E.g., if DISPLACEMENT = ALL or DISPLACEMENT(HG) = ALL is given, displacement information will not be present in the presentation, whereas if DISPLACEMENT = 1 or DISPLACEMENT(HG) = 1 is given, displacement information will be present in the presentation for the constituent nodes of Set 1.
For HGSENS, ASCSENS, or MSSENS options:
If NOSTRESS or blank: results are printed, but stress, strain, and force responses are ignored.
If ALL or STRESS: results are printed, including stress, strain, and force responses.
For HGHIST options:
The integer value given is equal to the sum of the desired options:
1: Design Variable.
2: Objective function and maximum % constraint violation.
4: All non-stress responses.
8: All DRESP2 responses.
16: All DRESP3 responses.
If blank: all of the above are output.
For example: If you want Design Variables and all DRESP2 responses, you would use 9.
The DVGRID option creates shape variable definitions for displacement or eigenvector results of linear static or normal modes analyses. These shape variable definitions can then be used in subsequent optimizations. This process facilitates the use of "natural" shape functions.
DVGRID cannot be used when linear buckling or frequency response subcases are present in the input.
For the keywords HM, H3D, HV, ASCII, OPTI, OS, NASTRAN, PUNCH, OP2, OUT2, OUTPUT2, PATRAN and APATRAN, the information provided by the OUTPUT I/O option entry takes precedence over information provided on the older FORMAT and RESULTS I/O option entries.
OUTPUT entries are read sequentially; therefore, where multiple OUTPUT entries exist with the same keyword, the last instance is used.
If OUTPUT,STAT,NO is defined, the *.stat file is deleted at the end of the run (as long as the run was successful), but the file always exists during the run.
OUTPUT,DESIGN takes precedence over the information provided on the older DENSRES I/O option entry. OUTPUT,DESIGN will write design results, at the frequency defined, to all active output formats (HM, H3D, or OPTI), regardless of the frequency chosen for that output format. By default, HM is the only active output format.
When CMSMETH is used, or when a full multi-body dynamics run is performed, the CMS stress modes can be written to OP2 format. This only happens when FORMAT OP2 (or OUTPUT, OP2) is defined. One file for each is generated. Stresses are written for shells and solids, while forces are written for bars/beams and welds. Each mode is written as a static load case with ID equal to the mode index. This output is compatible with FEMFAT by MAGNA.
Go To
Alphabetical List of I/O Options