Suppressing forced vibrations of structures using smart vibro-impact systems
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- 作者：Aref Afsharfard
- 关键词：Smart impact damper ; Viscous–Hertz contact ; Forced vibration ; Tuned mass damper
- 刊名：Nonlinear Dynamics
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：83
- 期：3
- 页码：1643-1652
- 全文大小：1,112 KB
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1. Mechanical Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran - 刊物类别：Engineering
- 刊物主题：Vibration, Dynamical Systems and Control
Mechanics
Mechanical Engineering
Automotive and Aerospace Engineering and Traffic - 出版者：Springer Netherlands
- ISSN：1573-269X
文摘
In the present study, forced vibration of an oscillator equipped with the tuned mass damper and the impact damper is investigated. In the impact damper system, elastic contact between masses is described using the Hertzian contact model and the energy loss during each contact is considered using a viscous damper. Application of the conventional impact dampers for suppressing forced vibrations is studied with changing the mass ratio and restitution coefficient. Furthermore, variable coefficient of restitution impact dampers are used to attenuate forced vibration. To improve application of the conventional impact dampers, the barriers of these systems are equipped with the MR fluid dampers, and for convenience, this kind of impact dampers is simply named as smart impact dampers. Effect of changing the input electrical current and contact speed is studied on application of the smart impact dampers. Finally, it is shown that the smart impact dampers can suppress undesired forced vibrations stronger than their equivalent impact dampers and tuned mass dampers.