Analysis of the Electro-Mechanical Responses of the Piezoelectric Motor Based on Finite Element Method

Abstract:

The piezoelectric field and structure field of piezoelectric resonator of ultrasonic motor are intercoupling. It is difficult to obtain the solution under some circumstances because of the complex stress boundary condition and the influence of coupling effect. An electro-mechanical coupling finite-element dynamic equation is established on the basis of the Hamilton’s Principle about piezoceramic and elastomer. The equation is decoupled through the shock excitation of the piezoelectric resonator and the piezoelectricity element and material provided by finite-element analysis. As a result, an admittance curve as well as the distribution status of the nodal DOF is obtained, which provides an effective method to solve electro-mechanical coupling problems.

• Periodical: Applied Mechanics and Materials (Volume 697)
• Pages: 181-186
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.697.181
• Online since: November 2014
• Authors: Zi Lei Wang*, Tian De Qiu
• Keywords: Electro-Mechanical Coupling, Finite Element, Piezoelectric Resonator

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