压电堆在结构振动隔离中的应用

APPLICATION OF PZT STACK IN VIBRATION ISOLATION

利用压电材料的逆压电效应,压电堆可用于振动激励,也可用于振动隔离。本文推导了压电堆的有限元控制方程,采用数值方法研究了压电堆的隔振作用。作为算例,分析了支架采用压电堆隔振后的振动特性,为改善支架的动态特性提供了理论指导。

Using the converse piezoelectric effect, piezoelectric stacks can be used as exciter or vibration isolator. The finite element equations of structure containing piezoelectric stacks are derived by using Hamilton' s principle, and the dynamic property of a piezoelectric stack is studied. As an example, the vibration isolation of a supporter is researched, and the results can be used to improve the dynamic property of the supporter.