sorting

<SORT1, SORT2>

Default = blank

This argument only applies to the PUNCH format (.pch file) or the OUTPUT2 format (.op2 file) output for normal modes, frequency response, and transient subcases. It will be ignored without warning if used elsewhere.

SORT1:

Results for each frequency/timestep are grouped together.

SORT2:

Results for each grid/element are grouped together (Comment 12).

blank:

For normal modes analysis, SORT1 is used; for frequency response analysis, if element SET is not specified, SORT1 is used, otherwise, SORT2 is used; for transient analysis, SORT2 is used.

format

<HM, H3D, OPTI, PUNCH, OP2, PATRAN, APATRAN, PLOT, blank>

Default = blank

HM:

Results are output in HyperMesh results format (.res file). Refer to Stress Results Written in HyperMesh .res Format.

H3D:

Results are output in Hyper3D format (.h3d file). Refer to Stress Results Written in HyperView .h3d Format.

OPTI:

Results are output in OptiStruct results format (multiple files).

PUNCH:

Results are output in Nastran punch results format (.pch file). Refer to Stress Results Written in Nastran .op2 and .pch formats.

OP2:

Results are output in Nastran output2 format (.op2 file) (see comment 15, and also refer to Stress Results Written in Nastran .op2 and .pch Formats).

PATRAN:

Results are output in Patran format (multiple files).

APATRAN:

Results are output in Patran format (multiple files).

PLOT:

Results are output in Nastran output2 format (.op2 file) when PARAM, POST is defined in the bulk data section. Refer to Stress Results Written in Nastran .op2 and .pch Formats.

If PARAM, POST is not defined in the bulk data section, this format allows the form for complex results to be defined for XYPUNCH output, without having other output.

blank:

Results are output in all active formats for which the result is available.

form

<COMPLEX, REAL, IMAG, PHASE, BOTH>

Default (HM only) = COMPLEX

Default (all other formats) = REAL

COMPLEX (HM only), blank:

Provides a combined magnitude/phase form of complex output to the .res file for the HM output format.

REAL or IMAG:

Provides rectangular format (real and imaginary) of complex output.

PHASE:

Provides polar format (phase and magnitude) of complex output.

BOTH (HM only):

Provides both rectangular and polar formats of complex output.

type

<VON, PRINC, MAXS, SHEAR, ALL, TENSOR, DIRECT>

Default = ALL, TENSOR

VON:

Only von Mises stress results are output (HM, OPTI, and H3D only).

PRINC, MAXS, SHEAR:

von Mises and maximum principal stress results are output (HM and H3D only).

ALL:

All stress results are output.

TENSOR:

All stress results are output. Tensor format is used for H3D output.

DIRECT:

All stress results are output. Direct format is used for H3D output.

location

<CENTER, CUBIC, SGAGE, CORNER, BILIN, GAUSS>

Default = CENTER

CENTER:

Element stresses for shell and solid elements are output at the element center only.

CUBIC:

Element stresses for shell  elements are output at the element center and grid points using the strain gage approach with cubic bending correction.

SGAGE:

Element stresses for shell  elements are output at the element center and grid points using the strain gage approach.

CORNER or BILIN:

Element stresses for shell and solid elements are output at the element center and grid points using bilinear extrapolation (Comment 18).

GAUSS:

Element stresses for shell and solid elements are output at the element center and the Gauss integration points (Comment 18).

random

<PSDF, RMS>

No default

PSDF:

Requests PSD and RMS results from random response analysis to be output for solid and shell elements only (Comment 13).

Only valid for OUTPUT2 and H3D formats. The "RMS over Frequencies" output is at the end of the Random results in the .h3d file and labeled "Simulation 1" in the .op2 file.

RMS:

Requests only the “RMS over Frequencies” result from random response analysis to be output for solid and shell elements only (Comment 13).

Valid only for OUTPUT2 and H3D formats. It is labeled “Simulation 1” in the .op2 file.

peakoutput

<PEAKOUT>

Default = blank

If PEAKOUT is present, only the filtered frequencies from the PEAKOUT card will be considered for this output.

modal

<MODAL>

Default = blank

If MODAL is present, stresses of the structural modes and residual vectors are output to the H3D, PUNCH and OUTPUT2 files for modal frequency response and transient analysis.

surf

<SURF>

Default = blank

If SURF is present, OptiStruct automatically creates a 2D skin on the outer surfaces of solid elements in the model. The stresses of the skin elements are output based on the selected option.

Neuber

<NEUBER>

Default = blank

If NEUBER is present, the von Mises stresses, corrected with Neuber rule are output to the H3D file (Comment 19).

mnf

<MNF, NOMNF>

Default = MNF

MNF: Stresses are output to the .mnf file.

NOMNF: Stresses are excluded from the .mnf file.

THRESH

<thresh>

Real

Default = blank

Specifies an absolute threshold under which stress results should not be output (Comment 17).

RTHRESH

<rthresh>

0.0 < Real < 1.0

Default = blank

Specifies a relative threshold as a fraction of the maximum von Mises stress under which results should not be output. For example, if VMS is the maximum von Mises stress in the model, then stress results below VMS*rthresh are excluded from the output.

TOP

<topn>

Integer>0

Default = blank

Only the top “topn” stress values should be output.

RTOP

<rtop>

0.0 < Real < 1.0

Default = blank

Only the top fraction (“rtop”) of the total number of stress values should be output. For example, if STOT is the total number of stress values in the model, then only the top STOT*rtop values are output.

option

<YES, ALL, NO, NONE, SID, PSID>

Default = ALL

YES, ALL, blank:

Stress results are output for all elements.

NO, NONE:

Stress results are not output.

SID:

If a set ID is given, stress results are output only for elements listed in that set.

PSID:

If a property set ID is given, stress results for the elements referencing properties listed in the property set are output.