Interfacial fracture mechanics for anisotropic bimaterials

J. Qu, J. L. Bassani

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

This paper focuses on aspects of fracture mechanics of interface cracks in anisotropic bimaterials. In this case there is a coupling of all three crack-tip fracture modes in the natural interface-crack coordinate system, whereas in the isotropic case, mode 3 is decoupled from modes 1 and 2. This paper intends to shed light on how to interpret the crack-tip fields which are given explicitly along the interface in terms of two (real 3 × 3) bimaterial matrices W and D. A matric function Y is defined in terms of W and D which determines the coupling and oscillations in the cracktip fields. Explicit expressions for the crack-tip fields and the associated stress intensity factors are given as well as for the energy release rate. The finite (Griffith) interface crack is considered in detail.

Original languageEnglish
Pages (from-to)422-431
Number of pages10
JournalJournal of Applied Mechanics, Transactions ASME
Volume60
Issue number2
DOIs
StatePublished - Jun 1993

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