The electromechanical coupling model of cantilevered piezoelectric harvester was developed by considering the nonlinearities of piezoelectric material, based on Hamilton theory, Rayleigh-Ritz method, Euler-Bernoulli beam theory and constant electrical field across the piezoelectric element. The response characteristics of the system were investigated numerically, and the influences of piezoelectric material nonlinear coefficient on the system response were analyzed. By exploring the nonlinear characteristics of the piezoelectric vibrator near the resonant frequency, the nature of the multi-solutions and jump phenomena in the resonance region was revealed. The results were verified experimentally. which provides a theoretical basis for the study of nonlinear mechanism of piezoelectric power generation system.
郭抗抗,曹树谦.压电发电悬臂梁的非线性动力学建模及响应分析[J].动力学与控制学报,2014,12(1):18~23; Guo Kangkang, Cao Shuqian. Nonlinear modeling and analysis of piezoelectic cantilever energy harvester[J]. Journal of Dynamics and Control,2014,12(1):18-23.复制