Journal of Jishou University(Natural Sciences Edition)

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Piezoelectric Ceramic Bimorph in Bending Vibration

HE Xiping,LI Qiang   

  1. (1.Applied Acoustics Institute,Shaanxi Normal University,Xi'an 710062,China;2.Shaanxi Normal University General Publishing House,Xi'an 710062,China)
  • Online:2017-05-25 Published:2017-06-19
  • About author:HE Xiping(1965—),male,was born in Yongxin County,Jiangxi Provnice,Ph. D degree,professor and doctoral supervisor of school of physics & information technology,Shaanxi Normal University;research areas are design of power ultrasonic vibration system and ultrasonic inspection and measurement.
  • Supported by:

    National Natural Science Foundation of China (11374201)


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.

Key words: piezoelectric ceramic bimorph, bending vibration, design, free edge, resonant frequency

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