Analysis of shear modes in a piezoelectric vibrator

Wenwu Cao, Shining Zhu, Bei Jiang

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

A shear piezoelectric vibrator has been analyzed in detail. There are two types of shear motion associated with the same shear stain deformation. It is found experimentally that the lower frequency mode among the two has lower strength and its vibration amplitude continuously decreases as the long dimension of the vibrator increases. A nearly pure shear mode may be obtained with the aspect ratio greater than 20, but the influence of the other low frequency mode could not be totally eliminated even at such a large aspect ratio. We found that such phenomena can be understood by the conservation of angular momentum and the shared origin of these two types of shear motion. The ratio of the driving forces for these two types of shear motion is related directly to the aspect ratio of the vibrator. Formulas for calculating k 15 from the resonant and antiresonant frequencies using both type of shear modes are given.

Original languageEnglish (US)
Pages (from-to)4415-4420
Number of pages6
JournalJournal of Applied Physics
Volume83
Issue number8
DOIs
StatePublished - Apr 15 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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