Dynamic interaction between a screw dislocation and a surface crack

Document Type

Conference Proceeding

Publication Date

1-1-1997

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.

Identifier

0030655016 (Scopus)

Publication Title

Proceedings Annual Conference Canadian Society for Civil Engineering

First Page

219

Last Page

228

Volume

4

This document is currently not available here.

Share

COinS