Transient elastic-plastic-creep crack-tip stress fields under load-controlled loading

H. S. Lee, D. J. Kim, Y. J. Kim, R. A. Ainsworth, P. J. Budden

研究成果: Article査読

3 被引用数 (Scopus)

抄録

This paper presents transient and steady-state elastic-plastic-creep crack-tip stress fields under load-controlled loading conditions for a wide range of combinations of power-law plastic and creep materials. The crack-tip stress fields are characterized in terms of 2 parameters to accommodate the crack-tip constraint effect; the C(t)- (or C*-) integral and the βQ parameter (the Q-parameter normalized with respect to the proximity parameter to plastic collapse). For practical application, the crack-tip stress fields are re-formulated explicitly in terms of time and crack-tip stress fields for elastic-plastic and steady-state creep conditions. Comparison with detailed FE results for plane strain tension and bend specimens shows that this formulation of the crack-tip stress fields agrees well with finite element results.

本文言語English
ページ(範囲)949-965
ページ数17
ジャーナルFatigue and Fracture of Engineering Materials and Structures
41
4
DOI
出版ステータスPublished - 2018 4月
外部発表はい

ASJC Scopus subject areas

  • 材料科学一般
  • 材料力学
  • 機械工学

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