基于轮齿剥落故障的齿轮动力学特性及特征提取方法  

Dynamic Characteristic of Gear and Feature Extraction Method Based on Spalling Defect

作　　者：吴胜利[1] 邵毅敏[2] 邢文婷[3] 简晓春[1] WU Sheng-li;SHAO Yi-min;XING Wen-ting;JIAN Xiao-chun(College of Traffic and Transportation,Chongqing Jiaotong University,Chongqing 400074,China;State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China;Economics and Business Administration,Chongqing Technology and Business University,Chongqing 400067,China)

机构地区：[1]重庆交通大学交通运输学院,重庆400074 [2]重庆大学机械传动国家重点实验室,重庆400044 [3]重庆工商大学管理学院,重庆400067

出　　处：《科学技术与工程》2018年第29期200-205,共6页Science Technology and Engineering

基　　金：国家自然科学基金(51705052);重庆市教委科学技术研究项目(KJ1705141)资助

摘　　要：齿轮在啮合过程受到交变载荷的作用,会在齿面产生剥落等故障,严重影响齿轮啮合的稳定性和可靠性。推导了轮齿剥落故障时齿轮啮合刚度计算公式,研究了时变刚度计算方法,建立了轮齿剥落故障的齿轮啮合动力学模型;并利用试验验证了动力学模型的有效性。同时研究了缺陷尺寸和输入转速对齿轮振动特性的影响,引入包络谱信息熵的方法对缺陷时齿轮的振动特性进行了研究。为进一步研究齿轮故障分类等方法提供了理论依据和实践支撑。Due to the influence of alternating load,spalling are prone to be produced on the tooth surfaces in the meshing process,which seriously affects the stability and reliability of gear meshing.The meshing stiffness calculation formula of gear meshing is derived when the spalling is on the tooth surface.The calculation method of time-varying meshing stiffness is also studied.Then,dynamic model of gear meshing with the spalling defect on the tooth surface is established.And the effectiveness of the method is validated by comparing to the experimental data.The vibration characteristics of gear with different sizes defects on the tooth and input speed is studied.While the power spectral entropy is introduced to analyze the vibration characteristics.The results provide theoretical basis and practical support for the gear defect classification.

关 键 词：齿轮 剥落 动力学特性 振动特性 

分 类 号：TH113.1[机械工程—机械设计及理论]