我们分析极化的陶艺的一个机能上地分级的压电的盘子或 6mm 对称的晶体的砍水平的颤动。板的中央部分的材料与板的其余部分的不同。当中央部分的材料性质和板的其余部分满足某些条件时,在那里存在,这被显示出其颤动主要在中央部分外面快速在中央部分和腐烂以内被限制的套住的厚度砍和厚度扭曲模式。套住的模式的行为上的机能上地分级的材料性质的效果被检验。
We analyze shear-horizontal vibrations of a functionally graded piezoelectric plate of polarized ceramics or crystals of 6mm symmetry.The material of the central portion of the plate is different from that of the rest of the plate.It is shown that when the material properties of the central portion and the rest of the plate satisfy certain conditions,there exist trapped thicknessshear and thickness-twist modes whose vibrations are mainly confined within the central portion and decay quickly outside the central portion.The effects of the functionally graded material properties on the behaviors of the trapped modes are examined.