摘要
为了研究缺陷对压电陶瓷器件的动力学性能的影响,提出了含可移动刚性夹杂的直角域压电陶瓷力学模型,利用复变函数法及镜像法研究了压电陶瓷中缺陷附近的动应力集中和电场强度集中问题,得到了反平面剪切波作用下缺陷周边的动应力集中系数和电场强度集中系数的解析表达式,并给出了计算结果图讨论它们随无量纲波数、陶瓷的物理参数和几何参数的变化规律。
The objective of present paper is to investigate theoretically the dynamic anti-plane behavior for piezoelectric ceramic device with defects. The model of a quarter-infinite piezoelectric ceramic with a subsurface removable rigid cylindrical inclusion is proposed. Based on complex variable and mirror image methods, the expressions are obtained on dynamic stress concentration factor(DSCF) and electric field intensity concentration factor(EFICF) at the inclusion's edge caused by the scattering of anti-plane shear wave. As examples, numerical results are presented, so as to show how the frequencies of incident wave, the ceramic's parameters and the structure's geometry influence on DSCF and EFICF.
出处
《中国陶瓷》
CSCD
北大核心
2014年第5期16-21,共6页
China Ceramics
基金
河北省教育厅青年自然科学基金项目(Q2012031)
关键词
压电陶瓷
可移动刚性夹杂
动应力集中系数
电场强度集中系数
Piezoelectric ceramic
Rmovable rigid cylindrical inclusion
Dynamic stress concentration factor(DSCF)
Electric field intensity concentration factor(EFICF)
