椭圆孔口端点和裂纹端点处的变动态应力分析  

STRESS ANALYSIS IN VARIATION STATE AT CRACK TIP AND NOTCH CROWN TIP

作　　者：陈宜周[1] 李福林[1] 林筱云[1] 

机构地区：[1]江苏大学工程力学研究所,镇江212013

出　　处：《固体力学学报》2005年第4期473-476,共4页Chinese Journal of Solid Mechanics

基　　金：国家自然科学基金(10272053)资助项目

摘　　要：分析了椭圆孔口端点和裂纹端点处的变动态应力.在分析中,设带椭圆孔口的无限平板受远处应力作用.变动态应力分析指的是,令动点趋近于椭圆孔端点和椭圆孔变成裂纹这二个过程在各种相对关系下进行.在不同相对关系下,求出椭圆孔口或裂纹端点应力的极限值.分析表明,随着不同的变动状态,对于端点处的某些应力会得到不同的极限值.Stress analysis in variation states at crack tip and notch crown tip is presented. In the study, an infinite plate with elliptic notch is subject to remote stresses at infinity. Particular variation states are assumed. In the variation states, the process for the moving point approaching the crown point of the elliptic hole and the process for elliptic changing into a crack are going forward simultaneously. Depending on the relation between two processes, it is proved that the limit value of stresses may not be same.

关 键 词：复变函数方法 椭圆孔口应力分析 变动态应力分析 应力集中 

分 类 号：O346.1[理学—固体力学]