东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (8): 1149-1153.DOI: -

• 机械工程 • 上一篇    下一篇

转定子系统整周多点碰摩故障仿真

马辉,吕颂,能海强,宋溶泽   

  1. (东北大学机械工程与自动化学院,辽宁沈阳110819)
  • 收稿日期:2013-02-08 修回日期:2013-02-08 出版日期:2013-08-15 发布日期:2013-03-22
  • 通讯作者: 马辉
  • 作者简介:马辉(1978-),男,河北安平人,东北大学副教授,博士.
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N100403008);教育部新世纪人才支持计划项目(NCET-11-0078).

Simulation of Multipoint Annular Rubbing Fault for a RotorStator System

MA Hui, LYU Song, NAI Haiqiang, SONG Rongze   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2013-02-08 Revised:2013-02-08 Online:2013-08-15 Published:2013-03-22
  • Contact: MA Hui
  • About author:-
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摘要: 以单跨双盘柔性转子系统为研究对象,基于接触动力学理论,应用有限元法,建立了考虑整周多点碰摩的转定子系统动力学模型.将转子和定子简化为一个点点接触单元,分析了两种不同载荷工况(两圆盘偏心同相位和反相位)导致的共振情况下,侵入量(未碰摩转子振幅与转定子间隙之差)和定子刚度对系统振动响应的影响.研究结果表明,两圆盘偏心反相位时的碰摩比同相位时更为剧烈,定子刚度对转定子碰撞导致的反弹程度以及定子振动加速度影响较大.

关键词: 整周多点碰摩, 转子系统, 接触动力学, 振动响应, 有限元

Abstract: The dynamic model for a flexible rotor system, which considered multipoint annular rubbing, was established using the finite element method based on the contact dynamics. The rotorstator multipoint annular rubbing was simulated using a pointpoint contact element. The effects of penetrating amounts, i. e. , the difference between the vibration amplitude of the rotator without rubbing and the rotorstator gap, and the stator stiffness on the vibration responses of the system were analyzed under two types of exciting loads. The eccentricity directions of the two discs were the same (case 1) or opposite (case 2). The results show that the rubbing is serious under case 2 than that under case 1, and the stator stiffness has great influence on the rebounding intensity caused by the rotorstator rubbing and on the acceleration responses of the stator.

Key words: multipoint annular rubbing, rotor system, contact dynamics, vibration response, finite element

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