Energy release rate along a three-dimensional crack front in a thermally stressed body

C. F. Shih*, B. Moran, T. Nakamura

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

656 Scopus citations

Abstract

Based on a line-integral expression for the energy release rate in terms of crack tip fields, which is valid for general material response, a (area/volume) domain integral expression for the energetic force in a thermally stressed body is derived. The general three-dimensional finite domain integral expression and the two-dimensional and axisymmetric specializations for the energy release rate are given. The domain expression is naturally compatible with the finite element formulation of the field equations. As such it is ideally suited for efficient and accurate calculation of the pointwise values of the energy release rate along a three-dimensional crack front. The finite element implementation of the domain integral corresponds to the virtual crack extension technique. Procedures for calculating the energy release rate using the numerically determined field solutions are discussed. For illustrative purposes several numerical examples are presented.

Original languageEnglish (US)
Pages (from-to)79-102
Number of pages24
JournalInternational Journal of Fracture
Volume30
Issue number2
DOIs
StatePublished - Feb 1986
Externally publishedYes

ASJC Scopus subject areas

  • Computational Mechanics
  • Modeling and Simulation
  • Mechanics of Materials

Fingerprint

Dive into the research topics of 'Energy release rate along a three-dimensional crack front in a thermally stressed body'. Together they form a unique fingerprint.

Cite this