Dynamic problems of cracks subjected to incident shear waves

I. Chung Weng, Zhiming Ji

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

By using the dislocation model for the surface crack and images for the free surface, the analytical solutions for interaction between a screw dislocation near a mode III (anti-plane shear) surface crack; an internal crack; and a moving crack subjected to the dynamic antiplane stress have been derived. The distribution densities of the dislocations as well as the phase lags are expressed as a system of singular integral equations containing Bessel functions. With this approach, the above dynamic problems can be properly related to each other and the exact analytical expression for the stress intensity factor for any given frequency can be derived. The effects of the wave number, the input incident angle, propagation speed and the dislocation on the stress intensity factor are also presented.

Original languageEnglish (US)
Pages (from-to)975-983
Number of pages9
JournalInternational Journal of Fatigue
Volume21
Issue number9
DOIs
StatePublished - Oct 1999

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Materials Science(all)
  • Industrial and Manufacturing Engineering
  • Modeling and Simulation

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