/RBODY/LAGMUL
Block Format Keyword Defines rigid bodies using Lagrange multipliers. This keyword is not available for SPMD computation.
Format
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) |
|---|---|---|---|---|---|---|---|---|---|
| /RBODY/LAGMUL/rbody_ID/unit_ID | |||||||||
| rbody_title | |||||||||
| node_ID | grnd_ID | ||||||||
| Blank Format | |||||||||
| Blank Format | |||||||||
Definition
| Field | Contents | SI Unit Example |
|---|---|---|
| rbody_ID | Rigid body
identifier. (Integer, maximum 10 digits) |
|
| unit_ID | Unit Identifier. (Integer, maximum 10 digits) |
|
| rbody_title | Rigid body
title. (Character, maximum 100 characters) |
|
| node_ID | Main (primary) node
identifier. (Integer) |
|
| grnd_ID | Secondary nodes group
identifier. (Integer) |
Comments
- The main (primary) and secondary nodes must have non-zero mass and inertia.
- The main (primary) node is not moved to the center of gravity of the body.
- All nodes are equivalent (no distinction between main and secondary nodes in this formulation) and may have other kinematical conditions of Lagrange Multiplier type.