This paper investigates the vibration suppression and energy harvesting problems of elastically supported beams with Nonlinear Energy Sink and Giant Magnetostrictive Materials(NES-GMM).Based on Hamilton's principle,Galerkin method,the governing equations of the coupled beam,NES-GMM system are derived.The response of the beam under harmonic excitation is numerically solved by the fourth-order Runge-Kutta method.The vibration suppression effect of NES-GMM on the beam was ana-lyzed in both time and frequency domains.A detailed numerical study is carried out to investigate the effects of the structural parameters on the vibration suppression and energy harvesting of the NES-GMM.The results indicate that the NES-GMM system is highly effective in suppressing multimodal transverse vibrations of elastically supported beams under harmonic excitation,showcasing a notable de-gree of independence in its vibration suppression and energy harvesting capabilities.
关键词
惯容非线性能量阱/弹性支承/振动控制/能量采集
Key words
inertial nonlinear energy sink/elastic support/vibration control/energy harvesting