CSTRAIN - Output Request
The CSTRAIN command can be used in the I/O Options or Subcase Information sections to request ply strain output for elements referencing PCOMP or PCOMPG properties for all subcases or individual subcases respectively.
CSTRAIN (format,type) = option
Argument |
Options |
Descriptions |
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format |
<HM, H3D, OPTI, PUNCH, OUTPUT2, blank> |
HM: |
Results are output in HyperMesh results format (.res file). |
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Default = blank |
H3D: |
Results are output in Hyper3D format (.h3d file). |
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OPTI: |
Results are output in OptiStruct results format (.cstr file). |
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PUNCH: |
Results are output in Nastran punch results format (.pch file). |
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OUTPUT2: |
Results are output in Nastran output2 format (.op2 file). |
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blank: |
Results are output in all active formats, for which the result is available. |
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type |
<ALL, PRINC> |
ALL, blank: |
All strain results are output. |
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Default = ALL |
PRINC: |
Only principal strain results are output. |
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option |
<YES, ALL,
NO, |
YES, ALL, blank: |
Results are output for all |
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Default = YES |
NO, NONE: |
Results are not output. |
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SID: |
If a set ID is given, results are output only for elements listed in that set. |
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PSID: |
If a property set ID is given, results for the elements referencing properties listed in the property set are output. |
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When the CSTRAIN command is not present, ply strain results are not output.
This output is not currently available for the frequency response or transient solution sequences.
The STRAIN I/O option controls the output of strain results for the homogenized composite material.
Only formats that have been activated by an OUTPUT or FORMAT command are valid for use on this card.
Multiple formats are allowed on the same entry; these should be comma separated. If no format is specified, then this output control applies to all formats defined by OUTPUT or FORMAT commands, for which the result is available. See Results Output by OptiStruct for information on which results are available in which formats.
Multiple instances of this card are allowed; if instances are conflicting, the last instance dominates.
The SOUT field on the PCOMP or PCOMPG bulk data entry must be set to YES to activate strain results calculation for the corresponding ply.
For plies defined on a PCOMPG bulk data entry, the results are grouped by GPLYID.
For optimization, the frequency of output to a given format is controlled by the I/O option OUTPUT. In previous versions of OptiStruct, a combination of the I/O options FORMAT and RESULTS were used; this method is still supported, but not recommended as it does not allow different frequencies for different formats.
Go To
Alphabetical List of I/O Options