Papers by Keyword: Piezoelectric Plate

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Authors: Jun Yao
Abstract: This paper introduces mechanics and electronic coupling mode of piezoelectric intelligent structures, and discusses the key technology and potential prospect of intelligent structures in application of vibration control. A multiple-input multiple-output transfer function model of piezoelectric plates is derived and an analogy for modal control between the piezoelectric structures and general ones is established. A concept, "piezoelectric vibration modes", is presented. Based on this concept and by experiment development, a "quasi-independent modal control" technique is presented, attempting to approach, with hardware as simple as possible, independent modal control. The experiment progress and results for multiple modal damping control show its effectiveness and practicality. The modal damping of piezoelectric intelligent structures can be increased enormously. They have good advantage and potential prospect in application of structure vibration control.
Authors: Yi Ming Fu, Xian Qiao Wang
Abstract: Based on the Talreja’s tensor valued internal state variables damage model and the Helmhotlz free energy of piezoelectric material, the constitutive relations of the piezoelectric plates with damage are derived. Then, the nonlinear dynamic equations of the piezoelectric plates considering damage are established. By using the finite difference method and the Newmark scheme, these equations are solved and the effects of damage and electric loads on the nonlinear dynamic response of piezoelectric plates are discussed.
Authors: Hui Min Li, Ying Mei Wang, Bing Yao Wang, Tian Hu He
Abstract: Based on the generalized thermoelastic theory postulated by Green and Lindsay(G-L), the dynamic response of an infinite rotating piezoelectric plate subject to thermal shocks on both up and bottom surfaces was investigated. To avoid the calculation precision loss caused by the integral transform technique, the so-called direct finite element method was used to solve the governing equations in time domain directly. The distributions of the dimensionless temperature, stress, displacement and electric potential were presented graphically. The results show that the direct finite element method provides an effective way for achieving high calculation precision in solving the generalized piezoelectric-thermoelastic problem. The results also show that the rotation effect tends to decrease the dimensionless displacement and electric potential and barely affects the dimensionless temperature and stress.
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