一个用于在周期性结构中传播的剪切型表面波的简单封闭形式色散方程。
A simple closed form dispersion equation for shear types of surface waves propagating in periodic structures.
作者信息
Plessky V P
机构信息
Adv. SAW Products SA, Bevaix.
出版信息
IEEE Trans Ultrason Ferroelectr Freq Control. 1993;40(4):421-3. doi: 10.1109/58.251293.
A closed-form dispersion relation is found for shear surface acoustic waves (SAWs), namely, Bleustein-Gulyaev waves (BGWs), surface transverse waves (STWs), and leaky waves, propagating in periodic structures in the frequency range corresponding to the Bragg stopband. Changes in the spatial structure of the waves mutually reflecting on the grating as well as bulk wave scattering are considered. A comparison with numerically obtained dispersion curves for leaky waves on 36-LiTaO (3) shows good agreement.
找到了一种封闭形式的色散关系，用于描述在对应于布拉格阻带频率范围内在周期性结构中传播的剪切表面声波（SAW），即布勒斯廷 - 古利亚耶夫波（BGW）、表面横波（STW）和泄漏波。考虑了在光栅上相互反射的波的空间结构变化以及体波散射。与数值获得的36 - 钽酸锂（3）上泄漏波的色散曲线进行比较，结果显示出良好的一致性。
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