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Frictionless 2D Contact formulations for finite deformations based on the mortar method

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Abstract

In this paper two different finite element formulations for frictionless large deformation contact problems with non-matching meshes are presented. Both are based on the mortar method. The first formulation introduces the contact constraints via Lagrange multipliers, the other employs the penalty method. Both formulations differ in size and the way of fulfilling the contact constraints, thus different strategies to determine the permanently changing contact area are required. Starting from the contact potential energy, the variational formulation, the linearization and finally the matrix formulation of both methods are derived. In combination with different contact detection methods the global solution algorithm is applied to different two-dimensional examples.

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  1. Institut für Baumechanik und Numerische Mechanik, Universität Hannover,  

    K. A. Fischer & P. Wriggers

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  1. K. A. Fischer
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  2. P. Wriggers
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Correspondence to K. A. Fischer.

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Fischer, K.A., Wriggers, P. Frictionless 2D Contact formulations for finite deformations based on the mortar method. Comput Mech 36, 226–244 (2005). https://doi.org/10.1007/s00466-005-0660-y

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