Computational modelling of interfacial failure

A. G. Varias, N. P. O'Dowd, P. E. McHugh, C. F. Shih

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The failure of imperfect bimaterial interfaces is examined. An adhesive relation is prescribed for the interface which governs the normal and shear traction versus normal and shear displacement response. These relations provide, what amounts to, a constitutive law for a thin interface layer which is envisioned to undergo a failure process, when subjected to combined tensile and shear tractions. Based on this model, we examine the effect cracks and flaws as well as on the ductility, toughness, and failure modes of bimaterial interfaces. The deformation of metal matrix composite materials is also investigated. Failure by strain localization in the neighborhood of the inclusion-matrix interface is examined. Both crystal plasticity and J2 flow theory are used to model the plastic deformation of the materials on either side of the interface. In both descriptions, full account is taken of finite changes in geometry, large plastic strains, and material strain rate sensitivity.

Original languageEnglish
Title of host publicationProc 1990 ASME Int Comput Eng Conf Expo
EditorsG.L. Kinzel, S.M. Rohde
PublisherPubl by ASCE
Pages671-689
Number of pages19
ISBN (Print)0791805166
Publication statusPublished - 1990
Externally publishedYes
EventProceedings of the 1990 ASME International Computers in Engineering Conference and Exposition - Boston, MA, USA
Duration: 5 Aug 19909 Aug 1990

Publication series

NameProc 1990 ASME Int Comput Eng Conf Expo

Conference

ConferenceProceedings of the 1990 ASME International Computers in Engineering Conference and Exposition
CityBoston, MA, USA
Period5/08/909/08/90

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