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Abstract Resonance and deflection behavior are discussed for a variety of electrically driven flexure-type devices. The deflection-bandwidth product (DBWP) is defined, and it is shown that when energy transfer is nonessential, the DBWP is a useful figure of merit. For piezoelectric and magnetostrictive devices, the maximum DBWP is a function of materials parameters only and not device dimensions. Even though the piezoelectric constants of poly(vinylidene fluoride) (PVF2) are much lower than those of typical ceramics, the maximum DBWP is higher. Theoretical and experimental results show that piezoelectric bender “bimorph” performance can be improved by using a relatively thick, low-density, low-modulus bonding layer.
Lee et al. (Thu,) studied this question.
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