压电复合材料层合结构中的SH波

基金项目: 航天支撑基金(2001514)

详细信息

SH wave in piezoelectric composite layered structure

School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 考虑压电耦合效应,通过传递矩阵-二维谱分析研究了压电复合材料层合板稳态SH波的频散特性和瞬态SH波的传播特性。数值分析表明: 压电耦合作用提高了SH波的截止频率和相速度; 由表面扰动激发的SH波, 一部分能量向板深度方向传播, 一部分以表面波的形式在两倍波长深度内传播。所采用的传递矩阵-二维谱分析为层合结构瞬态波动研究提供了一种有效的数值方法。
- SH波 /
- 压电效应 /
- 频散关系 /
- 传递矩阵 /
- 二维谱 /
- 表面波
Abstract: Considering piezoelectric coupling, the characteristic of frequency dispersion was investigated and the transient SH wave was obtained by means of the reverberation matrix-two dimensional spectrum method in the piezoelectric composite layered structure. The numerical results show that the cutoff frequency and phase velocity are raised as the piezoelectric effect, and the energy of SH wave generated by the surface disturbance partially propagates into the depth direction and the other propagates along the surface in the form of surface wave within two-plate-depth. The reverberation matrix-two dimensional spectrum method presents an effective numerical approach for the investigation of the transient wave in multilayer structures.
- SH wave /
- piezoelectric /
- frequency dispersion /
- reverberation matrix method /
- two dimensional spectrum /
- undefined