• CN:11-2187/TH
  • ISSN:0577-6686

›› 1998, Vol. 34 ›› Issue (5): 13-19.

• 论文 • 上一篇    下一篇

机械系统中具有随机系数和带有间隙的自激振动理论和应用

钦明浩;徐业宜;桂长林   

  1. 合肥工业大学机械系
  • 发布日期:1998-09-01

THEORY AND APPLICATIONS OF SELF-EXCITED VIBRATION WITH RANDOM COEFFICIENTS AND CLEARANCE IN MECHANICAL SYSTEMS

Qin Minghao;Xu Yeyi;Gui Changlin   

  1. Hefei University of Technology
  • Published:1998-09-01

摘要: 在研制轧钢机轧制过程中由打滑引起的自激振动时,考虑到实测中动滑动摩擦系数是随机的,以及万向联轴节具有间隙等因素,据此建立了具有随机系数和间隙的新广义Lienard方程,并从理论上提出此方程算法。所得结论符合生产实际,可以用来诊断轧钢机产生设备事故的原因,同时对轧钢机设计与生产也具有很大的实际意义,还可以推广到机床进给系统的爬行运动和转子轴承系统的研究。

关键词: 间隙, 奇线段, 随机系数, 自激振动

Abstract: In the study on self-excited vibration which is caused by slipping in rolling mills working, it is considered that the moving slipping frictional coefficient is random and the coulpe has clearance. According to these, anew generalized Lienard equation with clearance and random coefficients is derived. And the algorithm of the equation is provided. The conclution is consistent with mill practice. It can be used to diagnosis the causes of rolling mill's failure. It has important practice sence in the rolling mill's designing and working.

Key words: Clearance Segmental line, Random coefficient, Self-excited vibration

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