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A finite element method for contact using a third medium
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DOI：10.1007/s00466-013-0848-5.png)
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Abstract
En 中文
The numerical simulation of contact problems is nowadays a standard procedure in many engineering applications. The contact constraints are usually formulated using either the Lagrange multiplier, the penalty approach or variants of both methodologies. The aim of this paper is to introduce a new scheme that is based on a space filling mesh in which the contacting bodies can move and interact. To be able to account for the contact constraints, the property of the medium, that imbeds the bodies coming into contact, has to change with respect to the movements of the bodies. Within this approach the medium will be formulated as an isotropic/anisotropic material with changing characteristics and directions. In this paper we will derive a new finite element formulation that is based on the above mentioned ideas. The formulation is presented for large deformation analysis and frictionless contact.
Keywords:
ISOGEOMETRIC ANALYSIS
DEFORMATION CONTACT
MORTAR METHOD
DOMAIN METHOD
FORMULATION
INTERFACES
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