Study of the plastic stress intensity factor for V-shaped notch problems

Kuniharu Ushijima, Dai Heng Chen, Naoto Kitte

Research output: Contribution to journalConference articlepeer-review

Abstract

In the present study, the relation between the plastic and the elastic stress intensity factors, Kpand Ke, for various V-shaped notch problems is studied by using the finite element analysis. Detailed results for mode / under plane stress and plane strain conditions are investigated. Based on the numerical results, it is found that there is a one-to-one correspondence between Kp and Ke, even when the load is so large that the condition of the small scale yielding is not satisfied. Also, it is found that the values of Kp1-λe/Ke1-λp for various notch problems depend only on the notch opening angle γ and hardening exponent n. This enables one to evaluate the factor Kp for various notch problems without any plastic stress analysis.

Original languageEnglish
Pages (from-to)303-308
Number of pages6
JournalKey Engineering Materials
Volume243-244
Publication statusPublished - 1 Jan 2003
EventProceedings of the International Conference on Experimental and Computational Mechanics in Engineering - Dunhuang, China
Duration: 24 Aug 200227 Aug 2002

Keywords

  • Nonlinear Problem
  • Notch
  • Plane Problem
  • Plasticity
  • Stress Intensity Factor
  • Stress Singularity

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