题名：Free vibration analysis of functionally graded laminated sandwich cylindrical shells integrated with piezoelectric layer
作者：M. AREFI, R. KARROUBI, M. IRANI-RAHAGHI
单位：Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan 87317-53153, Iran
摘要：An analytical method for the three-dimensional vibration analysis of a functionally graded cylindrical shell integrated by two thin functionally graded piezoelectric (FGP) layers is presented. The first-order shear deformation theory is used to model the electromechanical system. Nonlinear equations of motion are derived by considering the von Karman nonlinear strain-displacement relations using Hamilton's principle. The piezoelectric layers on the inner and outer surfaces of the core can be considered as a sensor and an actuator for controlling characteristic vibration of the system. The equations of motion are derived as partial differential equations and then discretized by the Navier method. Numerical simulation is performed to investigate the effect of different parameters of material and geometry on characteristic vibration of the cylinder. The results of this study show that the natural frequency of the system decreases by increasing the non-homogeneous index of FGP layers and decreases by increasing the non-homogeneous index of the functionally graded core. Furthermore, it is concluded that by increasing the ratio of core thickness to cylinder length, the natural frequencies of the cylinder increase considerably.
关键词：free vibration nonlinear analysis frequency analysis cylindrical shell functionally graded material (FGM) functionally graded piezoelectric material (FGPM)
全文链接：http://www.amm.shu.edu.cn/EN/abstract/abstract14926.shtml
全文也可见AMM 201607Ref2