Numerical Analysis of a Moving Masss Vibration Suppression for a Vertical Vibrating System
In this paper, theoretical analysis and numerical simulation of a vertical vibrating system with an impact damper is presented. Different impacting forms are occurred in system under simple harmonic excitation. Phase diagram of periodic motion and temporal changes of velocity and displacement in time domain are given. Two important parameters of mass ratio and restitution coefficient are discussed for effect on motion of impact vibrating system, and stable periodic regions about this two parameters are obtained. Vibration suppression on boundaries of regions is calculated for regarding damping ratio of amplitude as evaluation standard. It is concluded that the impact dampers effectiveness depends on impacting phase of the mass particle and amplitude is always declined greatly when exciting frequency is close to the natural frequency. Vibration suppression on amplitude changes little when impacting order of periodic response is the same. The studying method presenting in this paper could be benefit for guiding the design of the impact damper and forecasting its damping effect.
vertical impact-damped system regions of periodic response vibration supression
Xiaohua Jing Junlan Cheng
Mechanical Engineering Department North China Institute of Aerospace Engineering Langfang, China
国际会议
武汉
英文
17-20
2011-08-20（万方平台首次上网日期，不代表论文的发表时间）