Study on the Experiment and Nonlinear Dynamics Mechanism of Gear Fault Evolution

Su Xunwen; Wang Shaoping

doi:10.16578/j.issn.1004.2539.2015.02.010

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Study on the Experiment and Nonlinear Dynamics Mechanism of Gear Fault Evolution

更新时间：2022-10-20

- Study on the Experiment and Nonlinear Dynamics Mechanism of Gear Fault Evolution
- Vol. 39, Issue 2, Pages: 19-24(2015)
- 作者机构：
  
  1. 北京林业大学工学院
  2. 北京航空航天大学自动化科学与电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2015.02.010
  CLC：
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[1]苏勋文,王少萍.齿轮故障演化的非线性动力学机理与实验研究[J].机械传动,2015,39(02):19-24+54.

Su Xunwen, Wang Shaoping. Study on the Experiment and Nonlinear Dynamics Mechanism of Gear Fault Evolution. [J]. 39(2):19-24(2015)
[1]苏勋文,王少萍.齿轮故障演化的非线性动力学机理与实验研究[J].机械传动,2015,39(02):19-24+54. DOI： 10.16578/j.issn.1004.2539.2015.02.010.

Su Xunwen, Wang Shaoping. Study on the Experiment and Nonlinear Dynamics Mechanism of Gear Fault Evolution. [J]. 39(2):19-24(2015) DOI： 10.16578/j.issn.1004.2539.2015.02.010.

摘要

由于齿轮传动存在间隙、摩擦以及时变刚度,其动力学特性具有强烈的非线性。当齿轮发生故障时,如点蚀、剥落以及断齿,振动信号往往伴随有超谐波、次谐波等非线性特征,给齿轮故障诊断带来一定困难,因此有必要研究齿轮不同故障程度时的非线性振动机理。通过应用傅里叶级数来描述齿轮时变刚度,一定程度上避免了分段函数刚度突变问题;通过引入齿轮故障程度因子来描述齿轮故障程度,建立了齿轮故障程度的非线性动力学模型;并搭建齿轮故障演化实验台进行相关实验。仿真和实验结果表明,在一定摩擦因数以及转速时,齿轮非线性振动与转速以及齿面摩擦因数有关,与故障程度没有直接关系。

Abstract

Because there are backlash friction and time-varying stiffness exist in gear transmission,the characteristics of gear pair has strong nonlinearity.When a gear has faults such as pitting,spalling and tooth breakage,there are often some nonlinear characteristics as super-harmonics or sub-harmonics along with vibration signal.These characteristics will bring some difficulty for fault diagnosis,so it is necessary to study the mechanism of nonlinear vibration under different gear fault degree.The Fourier expression is used to describe time-varying stiffness,and the problem of piecewise function stiffness mutation is avoided to some extent.The gear fault degree factor is used to depict gear fault degree,a nonlinear dynamics model for gear fault degree is established.And the experimental platform of the gear fault evolution is built.The simulation results and experimental results show that,with certain friction coefficient and rotating speed,the nonlinear vibration has direct relationship with rotating speed and gear friction coefficient and has no direct relationship with fault degree.

关键词

齿轮非线性动力学故障演化故障诊断

Keywords

GearNonlinearityDynamicsFault evolutionFault diagnosis

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