Real contact mechanisms and finite element formulation—a coupled thermomechanical approach

authored by
G. Zavarise, Peter Wriggers, E. Stein, B. A. Schrefler
Abstract

The solution of contact problems involves great numerical efforts to satisfy non‐penetration conditions. The search for numerical efficiency hence has limited the modelling of the real physical interface behaviour. Up to now mainly simple laws, usually formulated using constant coefficients, have been available to study contact problems in uncoupled from. Here a thermomechanically coupled contact element is presented which accounts for the real microscopic shape of the surfaces, the microscopic mechanism of force transmission and heat exchange. The contact element geometrical behaviour has been put together with experimental and theoretical well founded micro‐mechanical and micro‐thermal laws adapted to Finite Element Method (FEM) necessities. Based on these laws the macroscopic related stiffnesses are calculated and continuously updated taking into account changes in significant parameters. The linearization of the set of equations has been obtained using a consistent technique which implies computational efficiency.

External Organisation(s)
Istituto di Scienza e Tecnica delle Costruzioni
Technische Universität Darmstadt
Type
Article
Journal
International Journal for Numerical Methods in Engineering
Volume
35
Pages
767-785
No. of pages
19
ISSN
0029-5981
Publication date
15.09.1992
Publication status
Published
Peer reviewed
Yes
ASJC Scopus subject areas
Numerical Analysis, Engineering(all), Applied Mathematics
Electronic version(s)
https://doi.org/10.1002/nme.1620350409 (Access: Unknown)
 

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