Release Time:2022-09-05  Hits:

Date of Publication: 2015-01-01

Journal: 压电与声光

Institution: 机械工程学院

Volume: 37

Issue: 1

Page Number: 32-34

ISSN: 1004-2474

Abstract: Based on the analogy analysis between the constitutive equation of converse piezoelectric effect and thermo-elastic effect, an actuation voltage has analogy to a thermal load, and piezoelectric strain coefficient has analogy to orthotropic thermal expansion coefficient. Then, the thermo-elastic finite element method can be employed to analyze the static displacement of the inter-digital electrodes of the piezo-actuator. A correction coefficient is introduced to modify the non-uniformity and nonlinearity caused by local electric field of the inter-digital electrodes. The numerical and experimental examples confirm that piezoelectric-thermal analogy approach is valid and simple. ?, 2015, Yadian Yu Shengguang/Piezoelectrics and Acoustooptics. All right reserved.

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