About general contact in Abaqus/Explicit

Abaqus/Explicit provides two algorithms for modeling contact and interaction problems: the general contact algorithm and the contact pair algorithm. See About contact interactions for a comparison of the two algorithms. This section describes how to include general contact in an Abaqus/Explicit analysis, how to specify the regions of the model that may be involved in general contact interactions, and how to obtain output from a general contact analysis.

The general contact algorithm in Abaqus/Explicit:

  • is specified as part of the model or history definition of the model;

  • allows very simple definitions of contact with very few restrictions on the types of surfaces involved;

  • uses sophisticated tracking algorithms to ensure that proper contact conditions are enforced efficiently;

  • can be used simultaneously with the contact pair algorithm (i.e., some interactions can be modeled with the general contact algorithm, while others are modeled with the contact pair algorithm);

  • can be used only with three-dimensional surfaces;

  • can be used only in mechanical finite-sliding contact analyses; and

  • does not support kinematic constraint enforcement (contact constraints are enforced with the penalty method).

The following topics are discussed:

Related Topics
About contact interactions
In Other Guides
Defining general contact