压电双晶片弯曲振动频率方程及其位移解（英文）  

Piezoelectric Ceramic Bimorph in Bending Vibration

作　　者：贺西平[1] 李蔷[2] 

机构地区：[1]陕西师范大学应用声学研究所,陕西西安710062 [2]陕西师范大学出版总社,陕西西安710062

出　　处：《吉首大学学报（自然科学版）》2017年第3期13-18,共6页Journal of Jishou University(Natural Sciences Edition)

基　　金：National Natural Science Foundation of China(11374201)

摘　　要：利用小挠度理论推导设计压电双晶片弯曲振动的频率方程,得到其弯曲振动位移解.利用有限元方法计算压电双晶片弯曲振动的谐振频率.对研制的压电双晶片振子测得其谐振频率,测试结果与有限元计算结果、利用压电方程和小挠度理论推导的频率方程求得的结果相吻合.这说明,所推导的频率方程可于设计自由边界压电双晶片振子.Based on the small deflection bending vibration theory, the general displacement solution and the resonant frequency equation for a piezoelectric ceramic bimorph are derived. Meanwhile,the resonant frequencies of the piezoelectric ceramic bimorph are calculated by finite element method （FEM）. A piezoelectric ceramic bimorph is manufactured and its resonant frequencies are measured. It shows that the tested resonant frequencies are almost in good agreement with ones by analytical and FEM methods. It manifests the effectiveness of the presented theory for design of a PCB in this work.

关 键 词：压电双晶片 弯曲振动 自由边界 频率方程 

分 类 号：TB321[一般工业技术—材料科学与工程]