Description
The RBE2 entry defines a rigid body whose degrees of freedom are specified at a single grid point and whose dependent degrees of freedom are specified at an arbitrary number of grid points.
This option allows you to create a rigid body by giving a list of grid points.
Note that all degrees of freedom are made rigid in Autodesk Explicit.
Format
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| RBE2 | EID | GN | GM1 | GM2 | GM3 | GM4 | GM5 | ||
| GM6 | GM7 | GM8 | GM9 | -etc.- |
Example
| RBE2 | 12 | 2 | 15 | 18 | 22 | 25 | 27 | ||
| 34 |
| Field | Definition | Type | Default |
|---|---|---|---|
| EID | Element identification number. | Integer > 0 | Required |
| GN | Identification number of grid point to which all six independent degrees of freedom for the element are assigned. | Integer > 0 | Required |
| GMi | Grid point identification numbers at which dependent degrees of freedom are assigned. | Integer > 0 |
Remarks
- Rigid elements, unlike MPCs, are not selected through the Case Control Section.
- The grid point designated as GN is referred to as the reference node. It may or may not be at the center of mass of the rigid body.
- The grid points GMi make up what is called the set of member nodes for the rigid body (the member list).