Analysis of Piezoelectric Structures and Devices by Daining Fang

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By Daining Fang

This edited paintings covers piezoelectric fabrics within the kind of beams, plates, shells, and different structural parts in glossy units and constructions. functions are frequency keep watch over and detection features in resonators, sensors, actuators, oscillations, and different clever and clever buildings.

The contributions conceal novel tools for the research of piezoelectric buildings together with wave propagation, excessive frequency vibration, fabric characterization, and optimization of buildings. realizing of those equipment is more and more very important within the layout and modelling of subsequent iteration units and micro-structures with piezoelectric parts and results

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However, photostrictive actuators used in these structures were generally uniform thickness and surfaced laminated. Thus, under the uniform illumination of high-energy lights, they generated uniform control forces/moments, due to the photodeformation effect, a combined photovoltaic and converse piezoelectric effect. Actuation and control characteristics of distributed structures subjected to non-uniform control forces and moments were seldom investigated. The modal actuation effectiveness of a cylindrical shell panel laminated with this new photostrictive SQ actuator system is investigated in this section.

By analyses, comparisons and parametric evaluations, this study suggests that (1) When the new SQ actuator system is symmetrically placed at the shell center (center-located), it provides control effects only to modes (1,1), (1,3), (2,2), (3,1) and (3,3). It is ineffective to modes (1,2), (2,1), (2,3) and (3,2), due to cancellation of control actions. , the actuator coverage or size. Larger size doesn’t always guarantee better modal control effects. Thus, not only the actuator location, but also the actuator size is very important to the individual modal control effectiveness of various shell modes.

J. Acoust. Soc. , 1989, 85(6), 2432-2439. [19] Tzou H S. Spatially distributed orthogonal piezoelectric shell actuators: theory and applications. J. , 1994, 177(3), 363-378. [20] Ryou J K, Park K Y, Kim S J. Electrode pattern design of piezoelectric sensors and actuators using genetic algorithms. , 1998, 36(2), 227-233. [21] Tzou H S. Piezoelectric Shells: Distributed Sensing and Control of Continua. Kluwer Academic Publishers, Boston, Dordrecht, 1993, 18-55. [22] Xu Z L. Elasticity. Higher Education Press, Beijing, 2006.

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