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Nonlinear characteristics of circular-cylinder piezoelectric power harvester near resonance based on flow-induced flexural vibration mode |
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| Authors: | Hai-ren Wang Jie-min Xie Xuan Xie Yuan-tai Hu Ji Wang |
| Affiliation: | 1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, P. R. China;2. Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China;3. Piezoelectric Device Laboratory, Department of Mechanics and Engineering Science, School of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, Zhejiang Province, P. R. China |
| Abstract: | The nonlinear behaviors of a circular-cylinder piezoelectric power harvester (CCPPH) near resonance are analyzed based on the flow-induced flexural vibration mode. The geometrically-nonlinear effect of the cylinder is studied with considering the in-plane extension incidental to the large deflection. The boundary electric charges generated from two deformation modes, flexure and in-plane extension, were distinguished with each other because the charge corresponding to the latter mode produces no contribution to the output current. Numerical results on output powers show that there are multivaluedness and jump behaviors. |
| Keywords: | piezoelectric power harvester nonlinear behavior large deflection inplane extension multivaluedness |
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