Please wait a minute...
浙江大学学报(工学版)
JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE)
    
Analysis on response of a rotor with initial bend deformation under coupling fault of crack and rub-impact
YANG Dan1, GAN Chun-biao2, YANG Shi-xi2, WANG Yue-hua2
1. Department of Mechanics, Zhejiang University, Hangzhou 310027, China; 2. Department of Mechanical Engineering, Zhejiang University, Hangzhou 310027, China
Download:   PDF(2028KB) HTML
Export: BibTeX | EndNote (RIS)      

Abstract  

To investigate the vibration response of a rotor with initial bend deformation under coupling faults of crack and rub-impact, the dynamic model of the rotor was established based on the switching regularity of the crack from the neutral axis theory, where the nonlinear oil-film force and the rub-impact force were taken into account, and the effects of the depth of crack and the degree of initial bend deformation on the vibration response of the rotor were discussed by the Poincaré’s cross-section and the bifurcation diagrams. The results indicate that, the chaotic region near the critical speed of the rotor with initial bend deformation is wider than that without initial bend deformation, and the chaotic region will reduce gradually as the depth of crack increases. Moreover, the motion characteristics of initial bend deformation play a dominant role in the case of shallow cracks, however, if the crack is relatively deep, the periodic and chaotic states alternate with each other as the degree of the initial bend deformation increases, and the characteristic of the chaotic response may also vary from the degree of the initial bend deformation.

Published: 01 August 2014
CLC:  TH 113.1  
Service
E-mail this article
Add to my bookshelf
Add to citation manager
E-mail Alert
RSS
Articles by authors
Cite this article:

YANG Dan, GAN Chun-biao, YANG Shi-xi, WANG Yue-hua. Analysis on response of a rotor with initial bend deformation under coupling fault of crack and rub-impact. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2014, 48(8): 1496-1501.

URL:

http://www.zjujournals.com/eng/10.3785/j.issn.1008-973X.2014.08.020     OR     http://www.zjujournals.com/eng/Y2014/V48/I8/1496


一类初弯曲转子的裂纹-碰摩故障响应分析

摘要: 为了研究裂纹-碰摩耦合故障的一类初弯曲转子系统响应特性,在考虑转轴变形、非线性油膜力与碰摩力作用的基础上,结合由中性轴理论确定的裂纹开闭规律,建立该类故障转子的动力学方程,利用Poincaré截面和分岔图的变化分析初始弯曲程度与裂纹深度对系统振动响应特性的影响.结果表明：含初弯曲时系统振动响应在临界转速附近的混沌区域比无初弯曲时大,随着裂纹深度的增加,混沌区域逐渐缩小；初始弯曲的运动特性在浅裂纹情况下起主导作用,当裂纹深度较大时,系统振动响应随着初始弯曲程度的增大交替出现由周期演变为混沌状态的过程,混沌响应特性也可发生较大变化.

［1］ WAN Fang-yi, XU Qing-yu, LI Song-tao. Vibration analysis of cracked rotor sliding bearing system with rotor-stator rubbing by harmonic wavelet transform ［J］. Journal of Sound and Vibration, 2004, 271(3/5): 507-518.
［2］ PATEL T H, DARPE A K. Vibration response of a cracked rotor in presence of rotor-stator rub ［J］. Journal of Sound and Vibration, 2008, 317(3/5): 841-865.
［3］ 罗跃纲,闻邦椿.双跨转子-轴承系统裂纹-碰摩耦合故障的稳定［J］.机械工程学报,2008, 44(4): 123127, 132.
LUO Yue-gang, WEN Bang-chun. Stability of the two-span rotor-bearing system periodic with coupling faults of crack and rub-impact ［J］. Chinese Journal of Mechanical Engineering, 2008, 44(4): 123127, 132.
［4］ 罗跃纲.转子系统故障的若干非线性动力学问题及智能诊断研究［D］.沈阳:东北大学, 2002.
LUO Yue-gang. Study on some nonlinear dynamics problems of rotor system with faults and intelligent diagnosis method ［D］. Shenyang: Northeastern University, 2002.
［5］ 姚红良,李鹤,李小彭,等.裂纹碰摩耦合故障转子系统诊断分析［J］. 振动工程学报, 2006, 19(3): 307-312.
YAO Hong-liang, LI He, LI Xiao-peng, et al. Diagnoses of coupling fault of crack and rub-impact in rotor systems ［J］. Journal of Vibration Engineering, 2006, 19(3): 307-312.
［6］ ADILETTA G, GUIDO A R, ROSSI C. Chaotic motions of a rigid rotor in the short journal bearings ［J］. Nonlinear Dynamics, 1996, 10(3): 251-269.
［7］ 袁惠群,闻邦椿,李鸿光.非线性转子局部碰摩故障的分叉与混沌行为［J］.东北大学学报,2000, 2（6）： 610-613.
YUAN Hui-qun, WEN Bang-chun, LI Hong-guang. Bifurcation and chaos behavior of nonlinear local rubbing rotor ［J］. Journal of Northeastern University, 2000, 21(6): 610-613.
［8］ 袁惠群, 闻邦椿, 王德友. 非线性碰摩力对碰摩转子分叉与混沌行为的影响 ［J］. 应用力学学报, 2001, 4（18）： 16-20.
YUAN Hui-qun, WEN Bang-chun, WANG De-you. Effects of nonlinear rubbing and impact forces on the bifurcation and chaos behaviors of rub rotor ［J］. Chinese Journal of Applied Mechanics, 2001, 4(18): 16-20.
［9］ 闻邦椿,顾家柳,夏松波,等.高等转子动力学［M］. 北京: 机械工业出版社, 2000.
［10］ 杨丹,甘春标,杨世锡,等.含横向裂纹Jeffcott转子刚度及动力学特性研究［J］. 振动与冲击, 2012, 31(15): 121-126.
YANG Dan, GAN Chun-biao, YANG Shi-xi, et al Studies on stiffness and dynamical behavior of Jeffcott rotor with cross crack ［J］. Journal of Vibration and Shock, 2012, 31(15): 121126.
［11］ 李振平,罗跃纲,姚红良,等.具有裂纹-碰摩耦合故障转子-轴承系统的动力学研究［J］.应用力学学报, 2003, 3(20): 136-140.
LI Zheng-ping, LUO Yue-gang, YAO Hong-liang, et al. Dynamics of rotor-bearing system with coupling faults of crack and rub-impact ［J］. Chinese Journal of Applied Mechanics, 2003, 3(20): 136-140.
[1] HUANG WEI,WANG Jia xu,XU Tao,XIAO Ke, LI Jun yang,WU Hui chao. Vibration characteristics analysis and experimental research on metal rubber composite gear pair[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2016, 50(11): 2231-2238.
[2] CHENG Wei dong, ZHAO De zun. EMD soft thresholding denoising algorithm for rolling element bearing rotational frequency estimation[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2016, 50(3): 428-436.
[3] TIAN Hong liang,YU Yuan,ZHANG Yi. Normal rough contact modeling of machine tool support ground foot joint interface[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2015, 49(11): 2111-2118.
[4] WANG Yue-hua, GAN Chun-biao, YANG Shi-xi,LEI Hua. Noise reduction on sample responses of Hénon-Heiles
system subjected to bounded noise excitation[J]. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2011, 45(11): 1895-1899.