Nonlinear characteristics of circular-cylinder piezoelectric power harvester near resonance based on flow-induced flexural vibration mode  

作　　者：王海仁 谢捷敏 谢旋 胡元太 王骥 

机构地区：[1]Purple Mountain Observatory,Chinese Academy of Sciences [2]Department of Mechanics,Huazhong University of Science and Technology [3]Piezoelectric Device Laboratory,Department of Mechanics and Engineering Science,School of Mechanical Engineering and Mechanics,Ningbo University

出　　处：《Applied Mathematics and Mechanics(English Edition)》2014年第2期229-236,共8页应用数学和力学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.10932004 and11272127);a grant from the Impact and Safety of Coastal Engineering Initiative,a Center of Excellence Program of Zhejiang Provincial Government at Ningbo University(No.zj1213)

摘　　要：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 defection. 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 multi- valuedness and jump behaviors.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 defection. 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 multi- valuedness and jump behaviors.

关 键 词：piezoelectric power harvester nonlinear behavior large deflection in-plane extension multivaluedness 

分 类 号：O34[理学—固体力学]