Bonded Interaction

The program bonds the Set 1 and Set 2 (source and target) entities defined in the Local Interactions PropertyManager. Bonded entities behave as if they were welded. For geometric entities that mesh independently, bonding is applied with constraint equations.

You also have the option to bond components by enforcing common mesh nodes at their boundaries. In this case, the components that have common mesh nodes at their boundaries mesh as one body.

You can apply bonded interactions to these simulation studies:
  • Static
  • Frequency
  • Buckling
  • Thermal
  • Nonlinear
  • Dynamic
  • Drop test
Bonding between components that are touching (no clearance).
Illustration of common mesh nodes at component boundaries. The two components mesh as one body.
This limitation applies only to (a) the node-to-surface bonding formulation for all studies, and (b) the surface-to-surface bonding formulation for nonlinear studies.

In cases where bonding contact exists between sheet metal parts with other surfaces (solids or shells), the bonding algorithm can enforce over-stiffening due to the gap between the mid-surface mesh and the contact surface geometry. The over-stiffening of the bonding contact alters the calculation of the rigid body modes. The program will calculate all rigid modes (with frequency values close to 0), if you eliminate the gap by offsetting the mesh of the sheet metal parts from the mid-surfaces to the contact surface geometry.