Effects of three-dimensional constraint on cracks on bimaterial interfaces

✍ Scribed by Shiwen Wang; Wanlin Guo; Yapen Shen

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 622 KB
• Volume: 55
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(96)00022-7

✦ Synopsis

An exact asymptotic analysis for a crack lying on the interface of two elastic-plastic materials is performed under three-dimensional stress constraint. Various combinations of the three-dimensional constraint factor T-~/T.2, the hardening exponent n~/n2 and the hardening coefficient ~t~/ct2 are considered.

It is shown that the stress and deformation fields, especially the stress continuity condition on the interface are dependem upon the three-dimensional constraint factors, and some interesting results are presented. The influence of the constraint on singularity of the stress fields is studied as well. The stress singularity is weaker than the HRR singularity except T-~ = T.: = 0.0 and 0.5.