含点蚀的行星齿轮系统动力学特性及损伤评估研究
Research on Dynamic Characteristics and Damage Assessment of Planetary Gear System with Pitting
甄冬 1李东凯 1刘英辉 1梁小夏 1冯国金 1张浩1
作者信息
- 1. 河北工业大学 机械工程学院,天津 300401
- 折叠
摘要
齿面点蚀是一种典型的行星齿轮系统故障.为识别点蚀状态,本文开展动力学特性研究并提出了一种新型的评估指标.首先,虑及过渡曲线和齿间结构耦合效应,利用改进Weber法建立了精确的含点蚀故障齿轮副啮合刚度模型,并研究了故障程度对啮合刚度的影响规律.然后,综合考虑时变啮合刚度、静态传动误差、齿侧间隙和时变振动传递路径等多种因素构建了行星齿轮系统平移-扭转动力学模型,揭示了点蚀程度对系统动态特性的影响规律,并基于振动信号频谱特点提出了边带能量因子(Sideband Energy Factor,SEF)用于损伤评估.最后,利用实验验证了仿真模型的正确性及所提指标的有效性.
Abstract
Tooth surface pitting is a typical fault of planetary gear system.In order to identify the pitting state,the dynamic characteristics are studied and a new evaluation index is proposed in this paper.Firstly,considering transition curve and the structural coupling effect between teeth,an accurate meshing stiffness model of gear pair with pitting fault is established by the improved Weber method,and the influence of fault degree on meshing stiffness is studied.Then,the transverse-torsional coupling dynamic model of planetary gear system is established by comprehensively considering many factors such as time-varying meshing stiffness,static transmission error,backlash and time-varying vibration transmission path,and the influence of pitting degree on the dynamic characteristics of the system is revealed.Based on the spectrum characteristics of vibration signal,the sideband energy factor(SEF)is proposed for damage assessment.Finally,experiments are used to verify the correctness of the simulation model and the effectiveness of the proposed indicator.
关键词
故障诊断/行星齿轮系统/齿面点蚀/动力学特性/边带能量因子/损伤评估Key words
fault diagnosis/planetary gear system/tooth surface pitting/dynamic characteristics/sideband energy factor/damage assessment引用本文复制引用
基金项目
国家自然科学基金(52275101)
天津市自然科学基金(21JCZDJC00720)
出版年
2024
国家科技期刊平台
NSTL
万方数据