夹杂对I型裂纹应力强度因子影响的一般近似解  

A Generally Approximate Solution for the Stress Intensity Factor of Model Ⅰ Crack Affected by Inclusion

作　　者：盛强[1] 李中华[1] 

机构地区：[1]上海交通大学工程力学系,上海200030

出　　处：《上海交通大学学报》2005年第1期138-141,共4页Journal of Shanghai Jiaotong University

摘　　要：利用相变增韧理论和Eshelby等效夹杂方法,给出任意形状夹杂对I型裂纹应力强度因子影响的近似解析解.和有限元分析结果比较表明,由于引入远场应力对夹杂的作用,导出的近似解有较好的精度,适用于处理较大尺寸和具有任意形状的夹杂对I型裂纹应力强度因子的影响.Based on the theory of the transformation toughening and the Eshelby equivalent inclusion approach, a generally approximate solution was developed for predicting the stress intensity factor (SIF) of modeIcrack interacting with an inclusion of arbitrary shape. As validated by detailed finite element analyses, the solution has good accuracy not only for small inclusion but also for the inclusion with large size due to introducing the effect of the remotely stress on the inclusion. The present solution greatly extends the applicable range of the solution proposed in reference.

关 键 词：复合材料 夹杂 裂纹 应力强度因子 ESHELBY等效夹杂理论 

分 类 号：TB125[理学—工程力学]