PARAM, FLLWER
Bulk Data Entry Calculation of follower forces introduced by pressure loads and concentrated forces in large displacement nonlinear analysis.
Attention: Valid for Implicit
and Explicit Analysis
Parameter | Values | Description |
---|---|---|
FLLWER | <-1,
0, 1, 2,
3> Default = 1 (for pressure loads) Default = 0 (for concentrated loads) |
For a time-dependent
dynamic load, it controls the follower force option for the
amplitude of the dynamic excitation defined by pressure loads and
concentrated loads. 1
|
Comments
- Supported load types are:
- Pressure load
- PLOAD, PLOAD2, PLOAD4, PLOADSF, PLOADE1, PLOADX1 and PRSPENE
- Concentrated load
- FORCE, FORCE1, FORCE2, MOMENT, MOMENT1, and MOMENT2
- The follower effects of FORCE1, FORCE2, MOMENT1, and MOMENT2 are based on the vectors formed by the user-specified nodes, while that of FORCE/MOMENT is based on the rotation of the nodes.
- To activate the follower effect for FORCE/MOMENT, an additional flag, ROT is required. For more details, refer to the FORCE/MOMENT Bulk Data Entries.
- In case of Nonlinear Explicit Analysis (NLEXPL), follower loads are supported with DLOAD/TLOAD#, for all supported pressure loads, FORCE1, FORCE2, MOMENT1 and MOMENT2.