Active control of functionally graded laminated cylindrical shells |
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| Authors: | G.G. Sheng X. Wang |
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| Affiliation: | aSchool of Naval Architecture, Ocean and Civil Engineering (State Key Laboratory of Ocean Engineering), Shanghai Jiaotong University, Shanghai 200240, People’s Republic of China;bSchool of Civil Engineering and Architecture, Changsha University of Science and Technology, Changsha, Hunan 410076, People’s Republic of China |
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| Abstract: | An analytical method on active vibration control of smart FG laminated cylindrical shells with thin piezoelectric layers is presented based on Hamilton’s principle. The thin piezoelectric layers embedded on inner and outer surfaces of the smart FG laminated cylindrical shell act as distributed sensor and actuator, which are used to control vibration of the smart FG laminated cylindrical shell under thermal and mechanical loads. Here, the modal analysis technique and Newmark’s integration method are used to calculate the dynamic response of the smart FG laminated cylindrical shell with thin piezoelectric layers. Constant-gain negative velocity feedback approach is used for active vibration control with the structures subjected to impact, step and harmonic excitations. The influences of different piezoelectric materials (PZT-4, BaTiO3 and PZT-5A) and various loading forms on the active vibration control are described in the numerical results. |
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| Keywords: | Functionally graded laminated shells Active vibration control Thermal and mechanical loads |
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