# About general contact in Abaqus/Standard

 Abaqus/Standard 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/Standard 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/Standard: is specified as part of the model definition; 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 with two- or three-dimensional surfaces; and uses the finite-sliding, surface-to-surface contact formulation as the primary contact formulation, supplemented by the edge-to-surface, edge-to-edge, and vertex-to-surface contact formulations. The following topics are discussed:
 Related Topics About contact interactions In Other Guides *CONTACT *CONTACT INCLUSIONS *CONTACT EXCLUSIONS Defining general contact

ProductsAbaqus/StandardAbaqus/CAE