Strain Energy Release Rate for a Crack under Complex Loading.

Abstract

This paper gives an expression for the energy release rate in an arbitrary direction for a crack subjected simultaneously to Mode I, Mode II and Mode III conditions. The energy release rate is computed using the elastic solution of a deflected crack, having a main branch and a propagation branch. The elastic solution for the anti-plane problem is easily obtained by use of complex variables. For the in-plane problem we use the limiting solution recently obtained. Using the critical energy release rate criterion, incipient paths of propagation as well as the fracture stresses of such a crack, were obtained from the maximum value of the energy release rate. Results are in close agreement with a few experimental results available in the literature. The energy release rate, in parametric form, can be used for any crack subjected to Modes I, II and III loading conditions. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1975
Accession Number
ADA014977

Entities

People

  • M. A. Hussain
  • S. L. Pu

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Agreements
  • Complex Variables
  • Humanities
  • Literature

Readers

  • Combustion science or combustion engineering.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Explosive Engineering.