• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2021, Vol. 57 ›› Issue (17): 120-131.doi: 10.3901/JME.2021.17.120

• 机械动力学 • 上一篇    下一篇

扫码分享

齿轮磨损故障动态响应特征与诊断指标研究

沈智宪1,2, 乔百杰1,2, 罗巍1,2, 杨来浩1,2, 陈雪峰1,2   

  1. 1. 西安交通大学机械工程学院 西安 710049;
    2. 西安交通大学机械制造系统工程国家重点实验室 西安 710049
  • 收稿日期:2020-09-16 修回日期:2021-01-16 发布日期:2021-11-16
  • 通讯作者: 陈雪峰(通信作者),男,1975年出生,博士,教授,博士研究生导师。主要研究方向为机械装备动态分析与故障诊断。E-mail:chenxf@mail.xjtu.edu.cn
  • 作者简介:沈智宪,男,1994年出生,博士研究生。主要研究方向为齿轮系统动力学。E-mail:shenzhixian1994@gmail.com
  • 基金资助:
    国家重点研发计划(2018YFB1702400)、国家自然科学基金(51705397和51705398)和陕西省自然科学基金(2019KJXX-043)资助项目。

Research on Dynamic Response Characteristics and Condition Indicators of Gear Wear Fault

SHEN Zhixian1,2, QIAO Baijie1,2, LUO Wei1,2, YANG Laihao1,2, CHEN Xuefeng1,2   

  1. 1. School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049;
    2. The State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049
  • Received:2020-09-16 Revised:2021-01-16 Published:2021-11-16

摘要: 齿轮磨损属于典型的早期故障,为监测齿轮磨损状态,开展齿轮磨损故障机理与诊断指标研究。采用解析建模的方法,定量研究了齿轮磨损对时变啮合刚度和无负载静态传递误差动力学参数的影响规律:采用Archard磨损模型计算齿轮齿面磨损深度,获得沿齿廓方向的非均匀磨损分布;采用势能法计算齿轮啮合刚度,揭示了齿轮磨损对啮合刚度幅值影响的定量规律;将齿轮磨损等效为轮齿齿廓偏差,揭示了齿轮磨损对无负载静态传递误差影响的定量规律。采用集中参数法建立齿轮传动的动力学模型,通过两级直齿轮疲劳寿命试验对比验证了齿轮磨损动态响应特征。结果表明,齿轮磨损主要影响齿轮啮合频率及其谐波成分,同时啮合频率及其谐波的边频带以转频为主,且随磨损增加出现明显变化。基于获得的磨损动态响应特征,构造了四个基于振动信号啮合频率边带的诊断指标,该指标对磨损状态变化敏感,通过仿真和试验验证了指标的有效性和鲁棒性。

关键词: 齿轮磨损, 动力学模型, 时变啮合刚度, 传递误差, 动态响应, 诊断指标

Abstract: Gear wear fault belongs to a typical incipient fault. In order to monitor gear wear status, the mechanism and condition indicators of gear wear fault are studied. The influence of gear wear on dynamic parameters such as time-varying meshing stiffness and unloaded static transmission error is quantitatively studied:the Archard wear model is used to calculate the wear depth of tooth surface, and the non-uniform wear distribution along the tooth profile is obtained. Time-varying mesh stiffness is calculated by the potential energy method, and the influence of gear wear on the amplitude of mesh stiffness is evaluated. Gear wear is equivalent to the tooth profile deviation, and the influence of gear wear on the unloaded static transmission error is calculated. The dynamics model of gear transmission is established by means of lumped parameter method and the dynamic response characteristics of gear wear fault is verified by fatigue life test of two stage spur gear. The results show that gear wear affects the meshing frequency and its harmonics. Meanwhile, the sidebands of meshing frequency and its harmonics are mainly composed of rotational frequencies, which changes obviously with the increase of wear depth. Based on the obtained dynamic response characteristics of wear fault, four condition indicators based on the meshing frequency sideband of vibration signal are constructed, which are sensitive to the change of wear state. The effectiveness and robustness of condition indicators are verified by simulation and experiments.

Key words: gear wear, dynamic model, time-varying mesh stiffness, transmission error, dynamic response, condition indicator

中图分类号: