APPLICABILITY OF THE CRACK FACE ELECTRICAL BOUNDARY CONDITIONS IN PIEZOELECTRIC MECHANICS

被引：0
|
作者：
Wang Baolin Han Jiecai Du Shanyi (Center for Composite Materials
机构：
来源：
Acta Mechanica Solida Sinica | 2004年 / 04期
基金：
中国国家自然科学基金;
关键词：
piezoelectric materials; fracture; notch; boundary conditions;
D O I：
暂无
中图分类号：
TB39 [其他材料];
学科分类号：
摘要：
The electrical boundary conditions on the crack faces and their applicability in piezoelectric materials are discussed. A slit crack and a notch of ?nite thickness in piezoelectric materials subjected to combined mechanical and electrical loads is considered. Here, a crack is de?ned as a notch without thickness, which is ?lled with air or vacuum. The crack or notch is perpendicular to the poling direction of the medium. The ideal crack face electrical boundary conditions, i.e., the electrically permeable crack and the electrically impermeable crack, are in- vestigated ?rst. Then dependence of the ?eld intensity factors on notch thickness at the notch tips is analyzed to obtain a closed-form. The results are compared with the ideal crack solutions. Some useful results are found.
引用
收藏
页码：290 / 296
页数：7
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