I型裂纹与任意形状夹杂间的作用力  

An Approximate Solution for the Interaction Forces Between Model Ⅰ Crack and an Inclusion of Arbitrary Shape

作　　者：黄春平[1] 李中华[1] 

机构地区：[1]上海交通大学工程力学系,上海200240

出　　处：《上海交通大学学报》2005年第1期142-146,共5页Journal of Shanghai Jiaotong University

摘　　要：根据Eshelby等效夹杂理论,导出I型裂纹与任意形状夹杂相互作用力的近似表达式和一些特殊形状夹杂的简化算式.该解可快速算出I型裂纹与任意形状夹杂之间的作用力.由裂纹与夹杂间相互作用力的规律所揭示的复相材料中裂纹扩展特性、裂纹尖端材料的损伤机制和已有的实验观察相符.Based on Eshelby equivalent inclusion theory, a general appromimate solution for predicting the interaction forces of model I crack and an inclusion of arbitrary shape was developed, from which, a set of simplified form of the general solution was also proposed for several special inclusion shapes. The crack propagation behavior and damage mechanisms in composites discorered by interation forces of the crack and inclusion are matched for the experimental observation.

关 键 词：材料 微结构 裂纹 夹杂 ESHELBY等效夹杂理论 

分 类 号：TB125[理学—工程力学]