Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Path Stability of a Crack with an Eigenstrain

  • Beom, Hyeon-Gyu (Department of Mechanical Engineering, Inha University) ;
  • Kim, Yu-Hwan (Department of Mechanical Engineering, Inha University) ;
  • Cho, Chong-Du (Department of Mechanical Engineering, Inha University) ;
  • Kim, Chang-Boo (Department of Mechanical Engineering, Inha University)
  • Published : 2006.09.01
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Abstract

A slightly curved crack with an eigenstrain is considered. Solutions for a slightly curved crack in a linear isotropic material under asymptotic loading as well as for a slightly curved crack in a linear isotropic material with a concentrated force are obtained from perturbation analyses, which are accurate to the first order of the parameter representing the non-straightness. Stress intensity factors for a slightly curved crack with an eigenstrain are obtained from the perturbation solutions by using a body force analogy. Particular attention is given to the crack path stability under mode I loading. A new parameter of crack path stability is proposed for a crack with an eigenstrain. The path stability of a crack with steady state growth in a transforming material and a ferroelectric material is examined.

Keywords

References

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