Abstract

This paper investigates the propagation behaviour of shear wave in a piezo-electro-magnetic material (PEMM) layer overlying a functionally graded piezo-electro-magnetic material (FGPEMM) substrate with a point source existing at their interface. Dispersion equation for shear wave is deduced by using Green’s function method. The effect of various material parameters and functional gradient parameters of PEMM layer and FGPEMM substrate on the phase velocity of shear wave are examined and delineated graphically. The derived dispersion equation is found to be fairly-matched with the classical Love wave equation. The mass loading sensitivity has also studied at free surface of the considered model.

摘要

本文研究了剪切波在功能梯度压电材料 (FGPEMM) 基板上的压电电磁材料 (PEMM) 层中的传播行为，在其界面处存在点源。利用格林函数法推导出横波的色散方程。PEMM层和FGPEMM基板的各种材料参数和功能梯度参数对剪切波相速度的影响进行了检查和图解。发现导出的色散方程与经典的 Love 波动方程相当匹配。质量载荷敏感性也在所考虑模型的自由表面上进行了研究。