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Problems involving contact are of great importance in industry related to mechanical and civilengineering, but also in biomechanics and other applications. The contact interaction betweensurfaces and different bodies like in a bolted splice connection joint or area in which a tire interactswith the soil is not known a priori, leading to a nonlinear boundary value problem. Due to the rapidimprovement of modern computer technology, one can today apply the tools of computationalmechanics to analyze contact problems with required accuracy, depending on design requirements.However, even now most of the standard finite element software is not fully capable of solvingcontact problems, including friction, with robust algorithms. The aim of this paper is to present somebasic concepts of Contact Mechanich.
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