摘要
利用复变函数和波函数展开法对稳态SH波在含刚性可移动圆柱夹杂的无限线弹性压电介质中的散射与动应力集中问题进行研究.获得压电介质中刚性圆柱夹杂周边动应力的表达式,并对具有不同压电特征参数和不同波数情况下的夹杂边界动应力集中系数进行了数值计算.计算结果表明,边界动应力集中对外加电场压电参数具有线性依赖关系。
Scattering and dynamic stress concentrations of time harmonic SH-wave in an infinite elastic piezoelectric medium with a rigid cylindrical inclusion are studied with the help of complex variable and wave function expansion method.The relations that a rigid cylindrical inclusion depends on intensity of incident wave and electric field are revealed. The expressions of dynamic stress at the edge of the inclusion are obtained. Numerical calculations are made with different wave numbers and different piezoelectric characteristic parameters. The calculating results show that dynamic stress concentrations at edge of the inclusion have linear dependence on electric field, and dynamic analyses are very important to piezoelectric medium with a rigid cylindrical inclusion at lower frequencies and larger piezoelectric characteristic parameters.
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
2003年第5期574-577,共4页
Journal of Harbin Engineering University
基金
黑龙江省自然科学基金资助项目(A00-10).
关键词
压电介质
刚性圆柱夹杂
SH波散射
动应力集中
piezoelectric medium
rigid cylindrical inclusion
scattering of SH-wave
dynamic stress concentration
