Rigid body definition

A rigid body:

  • can be two-dimensional planar, axisymmetric, or three-dimensional;

  • is associated with a node, called the rigid body reference node, whose motion governs the motion of the entire rigid body;

  • can consist of nodes, elements, and surfaces;

  • can act as a method of constraint;

  • can be used with connector elements in multibody dynamic simulations;

  • can be used to prescribe the motion of a rigid surface for contact modeling;

  • can be computationally efficient and, in Abaqus/Explicit, does not affect the global time increment; and

  • can have temperature gradients or be isothermal in a fully coupled temperature-displacement analysis where thermal interactions are considered.

The following topics are discussed:

Related Topics
About surfaces
Element-based surface definition
Analytical rigid surface definition
In Other Guides
Rigid elements
Defining rigid body constraints