Element Initial Strain
Description: Defines the shell and solid element initial strain state for use in nonlinear analysis.
Format:
Example:
Alternate Format and Example:
| Field | Definition | Type | Default |
|---|---|---|---|
| SID | Load set identification number. | Integer > 0 | Required |
| EID | Element identification number. | Integer > 0 | Required |
| Si | Strain component values. See Remark 5. | Real | 0.0 |
Remarks:
- Initial strain sets must be selected in the Case Control Section (INITSTRAIN = SID).
- If the alternate form is used, all elements EID1 through EID2 that are not compatible or do not exist will be skipped.
- Elements must not be specified more than once.
- All elements directly referenced must exist.
- Strain vectors are specified either at the element centroid or the corner nodes. When corner data is input, the strain vector repeats the number of corner nodes minus one times. For shell elements, the input format is:
For solid elements, the format is:
- STRAIN Bulk Data entries can be exported using the TRSLSTRNDATA Model Initialization directive. (See Section 2, Initialization, for more information on TRSLSTRNDATA.)