Theoretical Analysis and Experimental Measurements on Resonant Characteristics of Piezoceramic Circular and Annular Plates
Date Issued
2005
Date
2005
Author(s)
Ho, Hsiang-Wei
DOI
zh-TW
Abstract
The piezoceramic circular and annular plates have simple and symmetrical geometrical shapes. Therefore, it is easy for theoretical analysis and the manufacturing of specimen. These piezoceramic devices have many industrial applications. To have a thoroughly understanding of frequencies, mode shape and electromechanical coupling coefficient for piezoceramic circular and annular plates, the experimental measurement of resonant frequencies and mode shapes is needed. This thesis will focus on the theoretical analysis, numerical calculation and experimental measurement of piezoceramic annular plates for resonant frequencies and vibration mode shapes.
This thesis will, at first, analyze theoretically the dynamic characteristics analysis of piezoceramic circular plates with fixed boundary and piezoceramic annular plates with one fixed boundary. In out-of-plane vibration (transverse) analysis, the non-symmetric modes are investigated. In in-plane (extensional and tangential) vibration, only the symmetric modes are considered .In this study, three experimental techniques, including AF-ESPI, LDV, and impedance analyzer, are used to obtain the vibration characteristics of piezoceramic circular and annular plates .The experimental results are compared with the FEM and analytical solutions . The resonant frequency, mode shape,electric current and electromechanical coupling coefficient for out-of-plane and in-plane vibration modes are analyzed and discussed in detail .
Subjects
壓電陶瓷
共振頻率
共振模態
機電耦合係數
piezoceramic
resonant frequencies
resonant mode shapes
electromechanical coupling coefficient
Type
thesis
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