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Contact3D

3D Node(Slave)-Triangular Facet(Master) Contact Element

  • Number of DoFs: 3
  • DoF Label: U1, U2, U3

Syntax

Text Only
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element Contact3D (1) (2) (3) [4]
# (1) int, unique element tag
# (2) int, master group tag
# (3) int, slave group tag
# [4] double, penalty factor

Remarks

  1. The contact algorithm is implemented via penalty function method as an element. The parameter [4] controls the magnitude of penalty.
  2. No matter whether the nlgeom switch is on or off for connected elements, the contact detection itself is always conducted in a nonlinear manner, similar to the total Lagrangian formulation for the precise computation of contact.
  3. The node-facet contact detection is performed for all nodes defined in slave group and facets defined by nodes in master group. There are \(n/3\) facets for \(n\) nodes in master group. So the number of nodes in master group must be multiples of \(3\).