Dynamic interaction between a screw dislocation and a surface crack

I. C. Weng, Zhiming Ji

Research output: Contribution to conferencePaperpeer-review

Abstract

A dislocation model based on the mirror image with respect to the free surface of a surface crack has been developed to determine the dynamic interaction between a screw dislocation and a mode III surface crack. Based on the dislocation concept applied to static crack problem and the work of Weng and Ji (1997) on cracks subjected to obliquely shear wave, we represent a mirrored surface crack subjected to SH (horizontal polarized shear waves) with an array of screw dislocations. The change of the crack extension force as the surface crack propagation towards the dislocation is presented in this paper. The effects of the wave number, the input incident angle and the dislocation on the stress intensity factor are also discussed.

Original languageEnglish (US)
Pages219-228
Number of pages10
StatePublished - Jan 1 1997
EventProceedings of the 1997 Annual Conference of Canadian Society for Civil Engineering. Part 4 (of 7) - Sherbrooke, Can
Duration: May 27 1997May 30 1997

Other

OtherProceedings of the 1997 Annual Conference of Canadian Society for Civil Engineering. Part 4 (of 7)
CitySherbrooke, Can
Period5/27/975/30/97

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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