Create RBE

Analysis > Connectors > Create RBE

This tool is used to define Rigid Body Elements by connecting an independent node with multiple dependent nodes (Spider RBE).

Description

  1. RBE can be created using body / face / edge as input.
  2. While creating RBE using body as input, All the nodes in the body can be used for RBE creation or the Few nodes uniformly distributed option can be used to create RBE using few nodes.
  3. If Radius limit is given only the nodes which fall within the specified radius (distance calculated from the center node) will be used for RBE creation.
    Radius limit
  4. Ignore mid nodes option can be used, if RBE should be created only with corner nodes of the elements.
    Ignore mid nodes
  5. Create separate RBE for each grouping option is used to create separate RBE for connected entities (i.e. all the entities that are connected will be considered as a group) so multiple RBE's will be created for each group, or else all the entities will be connected using one RBE.
    Create separate RBE for each grouping
  6. Center node of the Spider RBE can be created at the following positions
    • At centroid of the input entity.
    • By selecting a node as the independent node.
    • By selecting an arc edge, whose center will be used for creating the independent node.
  7. RBE cannot be created across models.
  8. Property needs to be assigned for RBE, where we can define the DOF of the RBE and the element type with respect to solver type.

Cards supported for various solvers

  • RBE2
    Solver Property(Element Type) Supported Cards
    Nastran - RBE2
    Abaqus CONN3D2 *CONNECTOR SECTION(with element type CONN3D2)
    *KINEMATIC COUPLING *KINEMATIC COUPLING
    *COUPLING,*KINEMATIC *COUPLING,*KINEMATIC
    BEAM MPC *MPC,BEAM
    EQUATION *EQUATION
    Permas - $MPC RIGID
    Ansys - CERIG
  • RBE3
    Solver Property(Element Type) Supported Cards
    Nastran - RBE3
    Abaqus DCOUP3D *DISTRIBUTING COUPLING(with element type DCOUP3D)
    *COUPLING,*DISTRIBUTING *COUPLING,*DISTRIBUTING
    *COUPLING,*DISTRIBUTING,Linear *COUPLING,*DISTRIBUTING,WEIGHTING METHOD=LINEAR
    *COUPLING,*DISTRIBUTING,Quadratic *COUPLING,*DISTRIBUTING,WEIGHTING METHOD=QUADRATIC
    *COUPLING,*DISTRIBUTING,Cubic *COUPLING,*DISTRIBUTING,WEIGHTING METHOD=CUBIC
    Permas - $MPC WLSCON
    Ansys - RBE3