Dynamic characteristics analysis and experimentaal measurements of piezoelectric elements and piezoelectric laminated structures

• Main Authors: Chou, Chung-Cheng, 周忠誠
• Other Authors: Chang Shuo-Hung
• Format: Others
• Language: zh-TW
• Published: 1998
• Online Access: http://ndltd.ncl.edu.tw/handle/06945115274363361243

博士 === 國立臺灣大學 === 機械工程學系研究所 === 86 === Dynamic Characteristics Analysis and Experimental Measurements of Piezoelectric Elements and Piezoelectric Laminated Structures Abstract This thesis presents the study of piezoelectric elements and piezoelectric laminates for the dynamic analysis. In the analysis of piezoelectric elements, different geometries of piezoelectric element are discussed. The solutions of system such as displacement, strain, etc., are solved for free-free boundary condition for each type. specially, the electromechanical coupling coefficient (EMCC) is calculated via different algorithms. The electroelasticity and asymptotic method are applied to solve the dynamic characteristics of piezoelectric laminates based on the results obtained from the piezoelectric elements. The solutions of system are derived, and the numerical analysis for different motions of piezoelectric laminates are also presented. Finally, the experiments for various piezoelectric elements and piezoelectric laminates are measured. The electrical current frequency response is measured for piezoelectric elements, and mechanical characteristics, such as displacement frequency response, and displacement sensitivity are measured for piezoelectric laminates. The comparison between theory and experiment show the good agreement. 。