A finite element method was developed for treating the mechanics of contact between deformable bodies. The method uses a family of adaptive Interface elements, which were based on the penalty method, to handle the changing contact configurations that can occur between discretized contacting bodies. The nodal connectivity of these interface elements was allowed to change during the computations In order to accommodate finite sliding. The Infusion of these elements in the Interface satisfies the stress equilibrium condition during contact. Explicit forms for the nodal internal forces are presented. The methodology has been coded and several sample problems are presented.
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