Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2002-12-01

Journal: ACTA MECHANICA SOLIDA SINICA

Included Journals: SCIE、Scopus

Volume: 15

Issue: 4

Page Number: 303-311

ISSN: 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.