A theoretical and numerical study of thin film delamination using the pull-off test
A theoretical and numerical study of thin film delamination using the pull-off test
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DOI：
10.1016/j.ijsolstr.2003.09.027
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发表时间：
2004-02
影响因子：
3.6
通讯作者：
Zuo-Yu Sun;K. Wan;D. Dillard
中科院分区：
文献类型：
--
作者：
Zuo-Yu Sun;K. Wan;D. Dillard
在存在残余拉应力的情况下，利用拉脱试验得到了受中心线力加载的矩形薄膜的应变能释放率的精确解析解。理论本构关系和应变能释放率符合很好的二维非线性有限元分析的整个变形制度，从弯曲板拉伸膜。基于有限元分析，还研究了该拔出试验的断裂模式，为界面分层提供了额外的见解。
An accurate closed-form analytical solution for the strain energy release rate for a thin rectangular film loaded by a central line force using the pull-off test is derived in the presence of a tensile residual stress. The theoretical constitutive relation and the strain energy release rate agree very well with two-dimensional nonlinear finite element analysis for the entire deformation regime ranging from bending plate to stretching membrane. Fracture modes for this pull-off test are also investigated based upon the finite element analysis, offering additional insights to the interfacial delamination.