A Micromechanics based Elastic Constitutive Model for Particle-Reinforced Composites Containing Weakened Interfaces and Microcracks

계면손상과 미세균열을 고려한 입자강화 복합재료의 미세역학 탄성구성모델

  • 이행기 (한국과학기술원 건설 및 환경공학과) ;
  • 표석훈 (한국과학기술원 건설 및 환경공학과) ;
  • 김형기 (한국과학기술원 건설 및 환경공학과)
  • Published : 2008.02.28


A constitutive model based on a combination of a micromechanics-based weakened interface elastic model (Lee and Pyo, 2007) and a crack nucleation model (Karihaloo and Fu, 1989) is proposed to predict the effective elastic behavior of particle-reinforced composites. The model specifically considers imperfect interfaces in particles and microcracks in the matrix. To exercise the proposed constitutive model and to investigate the influence of model parameters on the behavior of the composites, numerical simulations on uniaxial tension tests were conducted. Furthermore, the present prediction is compared with available experimental data in the literature to verify the accuracy of the proposed constitutive model.


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