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마이크로 크랙을 포함한 재료의 매크로 탄성 정수에 관한 자연요소해석

Natural Element Analysis on Macro Elastic Moduli for Materials with Micro-cracks

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주제분류기계공학

초록

Abstract

A meso-scale analysis method using the natural element method is proposed for the analysis of material damage of brittle microcracking solids. The microcracking is assumed to occur along Voronoi edges in the Voronoi diagram generated using the nodal points as the generators. The mechanical effect of microcracks is considered by controlling the material constants in the neighborhood of the micorcracks. The macro elastic moduli of isotropic solids containing a number of randomly distributed microcracks are calculated considering the effect of microcrack closure to demonstrate the validity of the proposed method.

참고문헌 (6)

  1. "Computational Damage Mechanics models for Brittle Microcracking Solids based on Mesoscopic Simulations", 48(4), pp.483 1994~498
  2. "Meshless Methods: An Overview and Recent Developments", 139(1), pp.3~47 (1996)
  3. "Element-free Galerkin Methods", 37 no. 2, pp.229~256 (1994)
  4. "The Natural Element Method in Solid Mechanics", 43(5), pp.839~887 (1998)
  5. "Elastic Moduli of a Cracked Solid", 12(2), pp.81 1976~97
  6. "Damage Mechanics" (1996), North-Holland

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