层合介质中平面SH波的传播

研究了平面SH波通过多层弹性层状介质时的传播特性,求得了透射波和反射波振幅的解析解表达式,并把本文表达式的特例与现有文献结果作了对比,结论一致,同时进行了含单一夹层时SH波的室内砂池模拟试验,试验结果与理论结果基本吻合。

Propagation of plane SH wave in laminated medium

On the basis of the theory of wave propagation in elastic medium and Snell theorem, the propagation characteristics of plane SH wave passing through elastic laminate including two half spaces and multi-layered elastic laminate is analytically studied. The two-dimensional dynamic equations and model of wave propagation are established. An analytical solution to the ratio of the amplitudes of transmitted wave to incident wave is obtained. The propagation of SH wave through two half-space medium including single lamina has been analyzed in detail. The results agree well with the existing ones in references. The comparison of vibration isolation experimental data with the analytical results shows that the analytical solution is valid and the model of wave propagation through elastic laminate is reasonable.