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Boundary Element Analysis of Strain Energy Release Rate G(t) for Cracked Viscoelastic Solids

균열이 있는 선형 점탄성체의 변형에너지 방출률 G(t)에 대한 경계요소 해석

  • 박명규 (문경대학 자동차기계계열) ;
  • 이상순 (한국기술교육대학교 메카트로닉스공학부) ;
  • 서창민 (경북대학교 기계공학과)
  • Published : 2003.12.01

Abstract

In this paper, the boundary element analysis of viscoelastic strain energy release rate G(t) for the cracked linear viscoelastic solids has been attempted. This study proposes the G(t) equation and the calculating method of G(t) by time-domain boundary element analysis for the viscoelastic solids. The G(t) is defined as the derivative of the viscoelastic potential energy II(t) with respect to crack length a. Two example problems are presented to show the applicability of the proposed method to the analysis of the cracked linear viscoelastic solids. Numerical results of example problems show the accuracy and effectiveness of the proposed method.

Keywords

Boundary Element Analysis;Cracked Viscoelastic Solids;Viscoelastic Potential Energy;Viscoelastic Strain Energy Release Rate

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