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

Lee, Haeng-Ki (한국과학기술원 건설 및 환경공학과)
Pyo, Suk-Hoon (한국과학기술원 건설 및 환경공학과)
Kim, Hyeong-Ki (한국과학기술원 건설 및 환경공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.21, no.1, 2008 , pp. 51-58 More about this Journal
Abstract
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.
Keywords
micromechanics; elastic constitutive model; particle-reinforced composites; progressive imperfect interface; microcracks;
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