双材料界面裂纹的能量释放率分析  

Strain energy release rate of bimaterial interface fracture

作　　者：陈瑛[1] 冯新权[2] 姜弘道[3] 苏超[4] 

机构地区：[1]山东大学土木系,山东济南250061 [2]山东省水利勘测设计院,山东济南250013 [3]河海大学土木工程学院,江苏南京210098 [4]河海大学水利水电工程学院,江苏南京210098

出　　处：《河海大学学报（自然科学版）》2007年第5期542-545,共4页Journal of Hohai University(Natural Sciences)

基　　金：河海大学院士基金资助项目(HHYS003)

摘　　要：利用J积分得到了一般条件下双材料界面裂纹的能量释放率(SERR),并按照裂纹尖端法向应力为0和Ⅰ和Ⅱ型耦合量JⅠ,Ⅱ为0的条件得到了应变能量释放率的Ⅰ型和Ⅱ型分量.其应变能量释放率分解的结果表明,轴力和弯矩都会产生Ⅰ型和Ⅱ型应变能量释放率分量.The strain energy release rate （SERR） of bimaterial interface fracture was calculated under general condition by use of J-integral. The mode Ⅰ and mode Ⅱ of SERR were obtained under the condition that both the normal stress at the tip of cracks and the coupling J Ⅰ ,Ⅱ between mode Ⅰ and mode Ⅱ were zero. The result of decomposition of SERR shows that both the axial force and the bending moment can produce mode Ⅰ and mode Ⅱ of SERR.

关 键 词：双材料界面 裂纹 应变能量释放率 

分 类 号：TU37[建筑科学—结构工程]