含界面微裂纹颗粒增强复合材料的有限元分析  

Finite element analysis of the particle-reinforced-composites with interface microcrack

作　　者：钟国辉[1] 倪新华[1] 刘协权[1] 赵磊[1] 孙涛[1] 

机构地区：[1]军械工程学院,河北石家庄050003

出　　处：《兵器材料科学与工程》2010年第6期4-7,共4页Ordnance Material Science and Engineering

基　　金：国家自然科学基金资助项目(No.10872216;No.51072229)

摘　　要：界面弧形微裂纹是复合材料在制备和加工过程中产生的一种细观损伤,这种现象普遍存在,不可避免。根据细观力学方法,将陶瓷颗粒、弧形裂纹和基体壳简化为椭球三相胞元置于有效介质氛围中;假设复合材料受单轴拉伸应力作用,基于有效自洽方法对复合材料基体中局部应力应变场进行分析;并应用ANSYS有限元软件对含界面微裂纹复合材料进行单轴拉伸行为模拟,得到与实际情况相符的数值结果。The interface arc-microcrack is a kind of inevitable micro-damages. On the basis of micromechanics, the ceremic particle, arc crack and matrix were simplied as three-phase-cell, was setted in the effective medium; while the composite was suffered the single axis stress, the effective self-consistent was applied to the stress field of the matrix ; and then the simulation was done by ANSYS. The calcuations agree well with practice.

关 键 词：界面弧形微裂纹 有效自洽方法 应力场 有限元分析 

分 类 号：O346[理学—固体力学]