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Transient Elastodynamic Mode III Crack Growth in Functionally Graded Materials

함수구배재료에서 천이탄성동적모드 III 균열전파

  • Lee, Kwang-Ho (Dept. of Mechanical and Automotive Engineering, Kyungpook Nat'l Univ.)
  • 이광호 (경북대학교 기계자동차공학부)
  • Received : 2010.01.05
  • Accepted : 2010.05.24
  • Published : 2010.07.01

Abstract

A generalized elastic solution for a transient mode III crack propagating along the gradient in functionally graded materials (FGMs) is obtained through an asymptotic analysis. The shear modulus and density of the FGMs are assumed to vary exponentially along the gradient. The stress and displacement fields near the crack tip are obtained in terms of powers of radial coordinates, and the coefficients depend on the time rates of the change of the crack tip speed and stress intensity factors. The influence of nonhomogeneity and transients on the higher order terms of the stress and displacement fields is discussed.

Keywords

Transient Elastodynamic Mode III Crack;Functionally Graded Materials;Crack Growth;Stress and Displacement Fields

Acknowledgement

Supported by : 경북대학교

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