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本文根据材料力学方法导出三相复合材料(加强纤维、基体与另一种材料)排成两层或一层的纵向弹性模量E_1和横向弹性模量E_2的计算公式,并由推论得出上述两种排列情况下的主泊松比v_(12)和剪切弹性模量G_(12)的计算公式及多于三相复合材料上述两种排列情况下E_1、E_2、v_(12)、G_(12)的计算公式。它们是三相或多于三相复合材料结构力学分析的基础。
Based on the method of mechanics of materials, the formulas for calculating the longitudinal elastic modulus E_1 and transverse elastic modulus E_2 of two-layer or one-layer composite materials (reinforcing fibers, matrix and another material) are deduced according to the method of mechanics of materials. The calculation formulas of the principal Poisson’s ratio v_ (12) and the shear modulus of elasticity G_ (12) under the two kinds of arrangements and the formulas of E_1, E_2, v_ (12), G_ (12) the formula. They are the basis of mechanics analysis of three-phase or more than three-phase composite structures.