Static Solution Selection for Differential Stiffness
Description: Selects the static solution to use in forming the differential stiffness matrix for linear buckling, normal modes, and modal response analysis.
Format:
Examples:
STATSUB(PRELOAD) = 3
STATSUB(BUCKLING) = 4
| Option | Definition | Type | Default |
|---|---|---|---|
| BUCKLING | Subcase identification number corresponds to a static buckling or varying load. | Character | See Remark 2 |
| PRELOAD | Subcase identification number corresponds to a static preload or constant load. | Character | See Remark 2 |
| n | Subcase identification number of an existing SUBCASE specified for static analysis. | Integer > 0 |
Remarks:
- STATSUB may be used in linear static and modal response solutions (SOL 101, 103, 105, 110, 111, and 112).
- BUCKLING is the default option for linear buckling and PRELOAD is the default for linear static and modal response solutions.
- The STATSUB command is not required for linear buckling analysis when a preload is not required. In this case the default for STATSUB is the first static subcase identification.
- In linear static and modal response solutions only one STATSUB command may be specified. In linear buckling analysis with a preload, both STATSUB(BUCKLING) and STATSUB(PRELOAD) must be specified.