Release 11.0 Documentation for ANSYS
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INISTATE, Action, par1, par2, par3, par4, par5, par6, par7, par8, par9
Defines initial state data and parameters.
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Specifies action for defining or manipulating initial state data:
SET | — | Use Action = SET to designate initial state coordinate system, data type and material type parameters. See "Command Specification for Action = SET". |
DEFINE | — | Use Action = DEFINE to specify the actual stress or strain values, and the corresponding element, integration point or layer information. See "Command Specifications for Action = DEFINE". |
WRITE | — | Use Action = WRITE to write the initial state values to a file when the SOLVE command is issued. See "Command Specifications for Action = WRITE". |
READ | — | Use Action = READ to read the initial state values from a file. See "Command Specifications for Action = READ". |
LIST | — | Use Action = LIST to read out the initial state data. See "Command Specifications for Action = LIST". |
DELETE | — | Use Action = DELE to delete initial state data from a selected set of elements. See "Command Specifications for Action = DELETE" |
| par1 = | par2 = | |||||
| CSYS | Coordinate System Type. par2 will be an integer corresponding to the coordinate system:
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| DTYP | Data Type. par2 will be the type of data that will be set on the subsequent INISTATE,DEFIne command:
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| MAT | Material Type. par2 will be the material ID. Using par2 = -1 will disable material-based initial state and enable Integration Point based Initial state data. |
Action = Set is used to specify and modify the environment into which you will define the initial state data by issuing a subsequent INISTATE,DEFINE command. If no Action = SET command is issued, subsequent INISTATE,DEFINE data will be input as initial stress data in the global Cartesian Coordinate System.
Element ID number. If (blank), defaults to current element selection.
Gauss integration point (defaults to “ALL”). Not valid for material-based initial state data.
Layer number (for layered solid/shell elements) or cell number for beam elements. Blank for non-layered, non-beam, elements, and not valid (ignored) for material-based initial state data.
Section integration point within a layer, or cell integration point for beams (typically 4 integration points, defaults to “ALL”). Not valid for material-based initial state data.
Stress values
You can repeat the INISTATE command to define multiple sets of initial state values. Initial state data can be specified according to elements, layers or integration points.
When the initial state parameters are being defined according to the material, (INISTATE, SET, MAT, MATID) ELID designates the element number and all subsequent values are ignored. See Initial State Loading in the Basic Analysis Guide for more information on implementing initial state values.
Set flag to 1 to generate initial stress file, and 0 to disable initial stress file generation.
CSID determines the coordinate system to write initial stress:
Write in Global Cartesian Coordinate System for solid elements.
Write in Material Coordinate System
Write in Element Coordinate System for link, beam, and layered elements.
Default is 0 for solid elements and -2 for link, beam, and shell elements.
Read initial state data from a file of a specified name, located in a specified path.
You can use the READ function to apply complex sets of initial state data to various elements, cells, layers, sections and integration points. See Initial State Loading in the Basic Analysis Guide for additional information.
Lists initial state data for elements with ID = ELID. If ELID is blank, all initial state data for all selected elements will be listed.