RBGEN

RBGEN, P0, ELSET, NDSET, ITTY, RID, MESHOPT, MASSOPT
Generates a rigid body.

Valid Products: Pro | Premium | Enterprise | PrepPost | Solver | AS add-on

P0

Pilot node number for a rigid body. If not specified or if the defined pilot node number does not exist, Mechanical APDL creates the pilot node.

ELSET

The name of component that is composed of the elements that will be defined as the rigid body.

NDSET

The name of component that is composed of the nodes that will be added to the rigid body and defined as Pin-type/Tie-type node.

ITTY

The type ID of the target element.

RID

Unique real constant ID number. This ID must not be assigned to any other elements. If RID is not specified, the program selects the next available real constant ID number.

MESHOPT

0 — Delete the underlying elements.

1 — Convert the underlying elements to MESH200.

MASSOPT

0 — Don't generate MASS21 element at pilot node.

1 — Generate MASS21 element at pilot node.

Notes

This command creates rigid bodies from pre-meshed element components. It generates target elements (TARGE169 for 2D or TARGE170 for 3D) on the exterior of a pre-meshed body discretized by solid, shell, and beam elements (called underlying elements), along with a pilot node. You may also add nodes to the rigid body as pin-type or tie-type nodes, defined as target element POINT segments (TSHAP,POINT).The associated target elements use the same real constant ID.

See Defining a Pre-meshed Body as a Rigid Body with RBGEN for more information on how to use this command.

Only one pilot node should be associated with a rigid body. Similar element components and nodal components should not be associated with multiple rigid bodies and should not be used for multiple RBGEN commands.

Generating a MASS21 element at the pilot node (MASSOPT = 1) is not supported for generalized plain strain and the axisymmetric case.

Menu Paths

This command cannot be accessed from a menu.