基于细观力学有限元法的复合材料有效模量的研究和数值模拟(4)

基于大型有限元软件ANSYS建立单向纤维增强复合材料的代表性体积单元的仿真模型,将纤维和基体作为两种不同的材料建模。通过施加适当的边界约束条件和载荷,计算有效弹性模量。计算结果与部分实验和理论结果具有较好的一致性,表明所采用的方法能够较好地计算复合材料的宏观有

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Study and Numerical Imitation of Composite Effective Modulus Based on Micro-Mechanical Finite Element

Method

Du Xiao, Chen Ke

Department of Civil Engineering, Hohai University, Nanjing (210098)

Abstract

Based on finite element software ANSYS, an imitation of the fiber reinforced composite representative volume element, which trades the fiber and matrix as two different materials, predicts macroscopic effective elastic modulus of composites by applying proper boundary deformation constraint condition and load. The numerical results agree well with available experimental and theoretical results, which show that the computational method can predict the effective elastic modulus of composites correctly. Keywords: ANSYS; composite material; representative volume element; effective elastic modulus

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