Dispersion of thickness vibrations of piezoceramic disk resonators
Dispersion of thickness vibrations of piezoceramic disk resonators
复制标题
压电陶瓷圆盘谐振器厚度振动的色散
DOI：
10.1109/t-su.1978.30980
复制
发表时间：
1978
期刊：
影响因子：
--
通讯作者：
P. Schnabel
中科院分区：
文献类型：
--
作者：
P. Schnabel
在厚度方向上极化和激励的压电陶瓷晶片可以以耦合的厚度纵向（TL）和厚度剪切（TS）振动模式振动。从本构方程导出了圆盘谐振器的色散谱，并对两种不同的陶瓷进行了评估。因此，材料参数的小偏差可以显示为导致具有明显的模式互换的光谱的转换。由此可以得出结论，能量捕获关键取决于一些材料系数，这些系数可以结合在TL谐振器材料的品质因数中。该图与陶瓷捕获能量装置的设计相关。
A piezoceramic wafer polarized and excited in its thickness direction can vibrate in thickness-longitudinal (TL) as well as thicknessshear (TS) modes of vibration which are coupled. The dispersion spectrum of a circular disk resonator is derived from the constitutive equations and evaluated for two different ceramics. As a result small deviations in material parameters can be shown to cause a conversion of the spectrum with an apparent interchange of modes. From this it can be concluded that energy trapping critically depends on some material coefficients which may be combined in a figure of merit for TL-resonator materials. This figure is relevant to the design of ceramic trapped energy devices.