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Indexed by:期刊论文

Date of Publication:2002-12-01

Journal:ACTA MECHANICA SOLIDA SINICA

Included Journals:Scopus、SCIE

Volume:15

Issue:4

Page Number:303-311

ISSN No.:0894-9166

Key Words:heat transfer; contact analysis; non-uniqueness of solutions

Abstract:A discussion about the bifurcation and non-uniqueness of solutions in the analysis of thermomechanical contact problems with initial gap is given. Without loss of generality, a mechanical contact problem coupled with steady heat transfer is studied and an example of non-uniqueness of solutions caused by the thermo-mechanical mechanism is presented. The important work is that the non-uniqueness of solutions, which is different from that found in the analysis of the traditional frictional contact problems, is studied in detail. The possible oscillation and non-convergence problems in the iteration process of the numerical computation are discussed, and an enhanced algorithm is put forward to overcome the difficulties.