Proceedings of the KSR Conference (한국철도학회:학술대회논문집)

The Korean Society for Railway (한국철도학회)
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Numerical Experiment for a Strain Energy Equivalence Principle (SEEP)-based Continuum Damage Model

탄성변형에너지 등가원리 기반 연속체 손상모델에 대한 수치실험

  • 윤덕기 (인하대학교 기계공학과) ;
  • 이우식 (인하대학교 기계공학과)
  • Published : 2006.11.09
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Abstract

A new continuum damage theory (CDT) has been proposed by Lee et al. (1996) based on the SEEP. The CDT has the apparent advantage over the other related theories because the complete constitutive law can be readily derived by simply replacing the virgin elastic stiffness with the effective orthotropic elastic stiffness obtained by using the proposed continuum damage theory. In this paper, the CDT is evaluated by the numerical experiment comparing the mode shapes and natural frequencies of a square plate containing a small line-through crack with those of the same plate with a damaged site replaced with the effective orthotropic elastic stiffness computed by using the CDT.

이 논문에서는 선관통형 균열을 포함하는 정사각형 평판과 선관통형 균열이 연속체 손상이론을 이용에서 구한 유효 직교 이방성 탄성 물성치의 등가 연속체 모델로 대체된 평판의 모드형상과 고유진동수를 비교하여 SEEP에 기반하여 Lee 등이 [5] 제안한 연속체 손상이론을 검증하였다.

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