*OPERATOR OUTPUT

Write operator output to a SIM document.

This option is used to write operator output to a SIM document in element-by-element or assembled form. It can be used only in a static or in an uncoupled heat transfer analyses.

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In Other Guides
Generating Matrices from Nonlinear Procedures

Products Abaqus/Standard

Type History data

LevelStep

Required parameters

OPERATOR

Set OPERATOR=ASSEMBLED to write assembled operators.

Set OPERATOR=ELEMENT BY ELEMENT to write element operators.

At least one of the following parameters is required

FREE BODY RESPONSE

Include this parameter to output the free-body force and moment vectors at convergence.

LOAD

Set LOAD=EXTERNAL (default) to output the external load vector.

Set LOAD=NET to output the net flux vector. This option can be used only in an uncoupled heat transfer analysis.

MASS

Include this parameter to output the mass operator at convergence.

This parameter can be used only in static analyses.

SOLUTION

Include this parameter to output the total solution vector.

In static analyses, the total solution vector includes displacements, rotations, and Lagrange multipliers.

This parameter can be used only in static analyses and with OPERATOR=ASSEMBLED.

STIFFNESS

Include this parameter to output the stiffness matrix at convergence.

This parameter can be used only in static analyses.

Optional parameters

BOUNDARY CONDITIONS

Set BOUNDARY CONDITIONS=YES (default) to output the STIFFNESS parameter operators with boundary penalty values.

Set BOUNDARY CONDITIONS=NO to output the STIFFNESS parameter operators without boundary penalty values.

ELSET

Use this parameter to write operators for a part of the model.

Set this parameter equal to the name of an element set that contains all the elements in the selected part of the model. By default, operators are generated for all supported elements in the whole model, including internal elements.

FREQUENCY

Set this parameter equal to the output frequency, in increments. The output is always printed at the last increment of each step unless FREQUENCY=0.

The default is FREQUENCY=1.

Set FREQUENCY=0 to suppress the output.

If this parameter and the NUMBER INTERVAL parameter are omitted, output is written at every increment of the analysis.

The FREQUENCY and NUMBER INTERVAL parameters are mutually exclusive.

NSET

Use this parameter to write operators for a part of the model.

Set this parameter equal to the name of a node set that contains all the nodes in the selected part of the model. Generated operators get contributions from all elements that are connected to the nodes of the selected node set. By default, operators are generated for all supported nodes in the whole model, including internal element nodes.

This parameter can be used only with OPERATOR=ASSEMBLED.

NUMBER INTERVAL

Set this parameter equal to the number of intervals during the step at which to write the output database states.

If this parameter and the FREQUENCY parameter are omitted, output is written at every increment of the analysis.

The FREQUENCY and NUMBER INTERVAL parameters are mutually exclusive.

There are no data lines associated with this option.