A new absorber combining an impact damper coupled with nonlinear energy sink (NES)was proposed, and its vibration attenuation efficiency was investigated by numerical simulations. The influences of absorber parameters on the amplitude of main structure,energy dissipating and vibration frequency were analyzed. It was demonstrated that this coupled system possesses high absorbing performance even in a wide range of initial input energy,and an appropriate clearance or a large restitution coefficient ca increases the number of collision and dissipate more energy at each collision. Moreover,strong nonlinear stiffness is in favor of enhancing vibration absorption.
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李继伟,赵泽福.冲击减振器与非线性能量阱耦合系统的振动抑制研究[J].动力学与控制学报,2020,18(2):76~81; Li Jiwei, Zhao Zefu. Vibration reduce for an impact damper coupled with nonlinear energy sink[J]. Journal of Dynamics and Control,2020,18(2):76-81.