Ezperimental Investigation of Pedestal Looseness in a Rotor-bearing System

摘要：

An experimental setup of rotor-bearing system is installed and vibration characteristics of the system with pedestal looseness are investigated.The pretightening bolt between the bearing house and pedestal is adjusted to simulate the pedestal looseness fault.The vibration waveforms,spectra and orbits are used to analyze the nonlinear response of the system with pedestal looseness.Different parameters,including speed,looseness gap,imbalance mass and disk position are changed to observe the nonlinear vibration characteristics.The experiments show that the system motion generally contains the 1/2X fractional harmonic component and multiple harmonic components such as 2X,3X,etc.Under some special conditions,the pedestal looseness occurs intermittently,that is,occurs in some periods and doesnt in other periods.

关键词： Ezperimental Research Looseness Vibration Rotor system

作者: Wenxiu LU Fulei CHU

作者单位: Department of Precision Instruments,Tsinghua University,Beiiing 100084.PRC Department of Precision Instruments,Tsinghua University,Beiiing 100084,PRC

会议类型: 国际会议

会议名称: The 8th International Conference on Damage Assessment of Structures(DAMAS 2009)(第八届结构损伤评价国际学术会议)

会议地点: 北京

会议语种:英文

页码: 599-605

在线出版日期: 2009-08-03（万方平台首次上网日期，不代表论文的发表时间）