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该文对粘贴在各向同性半平面结构表面的高频激励厚度剪切压电驱动器所产生的波传播特性提供了一种实用的解析与数值的分析方法。首先选用压电驱动器振动模式为厚度剪切模式,而驱动器下的半平面弹性体波传播的解析解则根据弹性力学应变积分求位移特解的方法得到,然后根据边界条件得到了整个结构中波传播的求解方案,通过数值模拟计算了半平面体上表面水平位移的分布特性,并讨论了几何参数、材料组合、加载频率对驱动器所产生波传播损耗量的影响规律,最后通过实验论证得到理论计算与实验结果非常接近,从而说明了数值分析的可靠性。
This paper provides a practical analytical and numerical method for the wave propagation characteristics generated by high frequency excited thickness shear piezoelectric actuators attached to the isotropic half-plane surface. Firstly, the piezoelectric actuator vibration mode is selected as the thickness shear mode, and the analytic solution of the half-plane elastic wave propagation under the actuator is obtained according to the method of elastic-mechanical strain integral to obtain the displacement. Based on the boundary conditions, Propagation solution was used to calculate the distribution of the horizontal displacement of the upper surface of the semi-planar body by numerical simulation. The influence of geometric parameters, material combinations and loading frequency on the wave propagation loss of the driver was discussed. Finally, Computation and experimental results are very close, which illustrates the reliability of numerical analysis.