Dynamic fields generated by rapid crack growth

J. D. Achenbach*, Z. L. Li, N. Nishimura

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Stresses and strains near a rapidly propagating crack tip are affected by the mass density of the material. This paper starts with a brief summary of analytical results for near-tip dynamic fields as predicted by linear elastic fracture mechanics. Next, exact expressions are derived for dynamic crack-line strains, for mode-III crack propagation in a nonlinear elastic material and in an elastic perfectly-plastic material. These expressions are valid on the crack line from the moving crack tip to the moving boundary with the region of linearly elastic deformation. For steady-state crack growth, a critical strain criterion is used to compute the relation between external load and crack tip speed. The required external load increases with crack-tip speed.

Original languageEnglish (US)
Pages (from-to)215-227
Number of pages13
JournalInternational Journal of Fracture
Volume27
Issue number3-4
DOIs
StatePublished - Mar 1 1985

ASJC Scopus subject areas

  • Computational Mechanics
  • Modeling and Simulation
  • Mechanics of Materials

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