A Meshfree method Based on the Local Partition of Unity for Cohesiv cracks

국부 단위분할 원리에 기초한 무요소법의 점성균열 모델

  • 지광습 (고려대학교 사회환경시스템공학과) ;
  • 정진규 (고려대학교 사회환경시스템공학과) ;
  • 김병민 (고려대학교 사회환경시스템공학과)
  • Published : 2006.04.01

Abstract

The meshfree method is extended by the local partition of unity method to model the cohesive cracks in two dimensional continuum The shape function of a particle whose domain of influence is completely cut by a crack is enriched by the step enrichment function. If the domain of influence contains a crack tip inside, it is enriched by the branch enrichment function without the stress singularity. It is found that this method is more accurate and converges faster than the meshless methods for LEFM cracks based on the visibility concept Several staic and dynamic examples are solved to verify the method.

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