On location of piezoelectric element in a smart-structure: numerical investigation and experiment

Winter School on Continuous Media Mechanics

Oshmarin, D.^1 ; Iurlov, M.^1

Department of Complex Problems of Deformable Solids Mechanics, Institute of Continuous Media Mechanics UB of RAS, Acad. Korolev str. 1, Perm

614013, Russia^1

关键词: Coefficient of electromechanical couplings;    Eigen frequencies;    Electromechanical systems;    Experimental investigations;    Numerical investigations;    Piezoelectric elements;    Structure control;    Vibration-damping;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/208/1/012047/pdf
DOI  :  10.1088/1757-899X/208/1/012047

来源: IOP

【 摘 要 】

In this paper, based on some example problems it was demonstrated that in examining the possibilities of smart structure applications, the matter of considerable researchers' concern is the problem of location of piezoelectric elements in the structure to allow effective realization of its smart functions in the framework of the specified strategy of structure control and target purposes (vibration damping, defectoscopy, etc.) The numerical and experimental investigations have shown that for structures with the elements made of piezoelectric materials, it is more convenient to use as a parameter, specifying the best location of the piezoelectric element for damping the vibrations at the prescribed frequency, the coefficient of electromechanical coupling, which is evaluated by the values of eigenfrequencies of the structure in the short-circuit and open-circuit regimes. The values of eigenfrequencies of vibrations are evaluated by solving the problem of natural vibrations of electromechanical systems by the finite element method using the applied ANSYS package. The investigation were conducted for a thin-walled aluminum shell in the form of half-cylinder.