Transient three-dimensional contact problems: mortar method. Mixed methods and conserving integration |
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Authors: | Christian Hesch Peter Betsch |
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Affiliation: | 1.Chair of Computational Mechanics, Department of Mechanical Engineering,University of Siegen,Siegen,Germany |
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Abstract: | The present work deals with the development of an energy-momentum conserving method to unilateral contact constraints and
is a direct continuation of a previous work (Hesch and Betsch in Comput Mech 2011, doi:) dealing with the NTS method. In this work, we introduce the mortar method and a newly developed segmentation process for
the consistent integration of the contact interface. For the application of the energy-momentum approach to mortar constraints,
we extend an approach based on a mixed formulation to the segment definition of the mortar constraints. The enhanced numerical
stability of the newly proposed discretization method will be shown in several examples. |
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