弾塑性破壊力学の基礎と拡張

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タイトル別名
  • Fundamentals of Elastic-Plastic Fracture Mechanics
  • ダン ソセイ ハカイ リキガク ノ キソ ト カクチョウ

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This paper describes the fundamentals of the elastic-plastic fracture mechanics. The HRR (Hutchinson-Rice-Rosengren) stress and strain singularity appearing near the crack tip, the J-integral as a measure of energy release rate, the path-independence of the J-integral are presented. Path-independent integrals are demonstrated as an extension of the J-integral. Several methods for evaluating the J integral are shown. Applicability and limitations of J-integral to crack initiation, stale crack growth and fatigue crack growth are discussed.

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