增强相分布方式对复合材料有效力学性能的影响  

Influence of Microstructure on Effective Mechanical Properties of Composite Material

作　　者：谭祥军[1] 杨庆生[1] 

机构地区：[1]北京工业大学机电学院,北京100022

出　　处：《宇航材料工艺》2008年第1期23-27,共5页Aerospace Materials & Technology

基　　金：国家自然科学基金资助(10272006,30470439)

摘　　要：针对增强相在基体材料中的分布方式的不同,建立了一个研究复合材料有效性能的细观力学模型。该模型由固体基体和增强相两相介质组成,假设细观结构呈周期性均匀分布。采用直接平均法和二尺度展开法计算了复合材料的有效性能,得出了不同微结构分布的复合材料横向弹性模量、泊松比和剪切模量随增强相材料体积分数比的变化曲线,其变化规律与实验数据吻合较好。研究表明在较大体积分数比下,增强相的分布直接影响到复合材料的弹性刚度。For different distribution of the reinforced phase in matrix material,a micromechanical model was developed to investigate the effective properties of composites material.The composites consisted of a solid matrix material and a reinforced phase.It was assumed that the composite had a periodic well-distributed microstructure.The transverse Young s modulus,shear modulus and poisson ratio of the composite were calculated by the two-scale expansion method.The numerical results were in accord with experimental ...

关 键 词：复合材料 体积分数比 细观结构 有效性能 

分 类 号：TB33[一般工业技术—材料科学与工程]