Crack energy density in an arbitrary direction and load-displacement curves

Katsuhiko Watanabe, Takao Utsunomiya, Yasuo Hirano

Research output: Contribution to journalArticle

Abstract

Crack energy density in an arbitrary direction εφ is expected to describe fracture behaviors of a mixed-mode crack. It was shown previously that εφ can be evaluated by a path independent integral with practically sufficient accuracy. In this paper, as another evaluation method of εφ, a method based on the relationship εφ and load-displacement curves is discussed. The contents are as follows (1) A relationship between initial crack lengths, load-displacement curves and εφ which holds until cracks start to grow is derived by considering the strain energies of the specimens with different initial crack lengths. A method to evaluate εφ from load-displacement curves is proposed based on this relationship. (2) Based on the method, the evaluation of εφ is tried from load-displacement curves obtained by finite element analyses and also experiments for specimens under tension with a crack inclined to the loading axis.

Original languageEnglish
Pages (from-to)1383-1389
Number of pages7
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume54
Issue number503
Publication statusPublished - 1988 Jul
Externally publishedYes

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Cracks
Strain energy
Direction compound
Experiments

ASJC Scopus subject areas

  • Mechanical Engineering

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Crack energy density in an arbitrary direction and load-displacement curves. / Watanabe, Katsuhiko; Utsunomiya, Takao; Hirano, Yasuo.

In: Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 54, No. 503, 07.1988, p. 1383-1389.

Research output: Contribution to journalArticle

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