摘要
为探讨齿轮系统裂纹故障的非线性动力学机理,研究含裂纹故障的四自由度齿轮系统的动力学特性,考虑时变啮合刚度及非线性间隙的影响,建立含裂纹故障的齿轮四自由度啮合耦合动力学模型,分析裂纹故障对系统啮合刚度的影响;采用谐波平衡法给出系统的解析解,分析裂纹故障及齿轮系统参数对齿轮传动系统的动力学行为的影响.结果表明,裂纹故障能够引起齿轮系统的幅值跳跃、分岔现象和系统共振,从而为齿轮箱的设计及裂纹故障的诊断提供依据.
This study focuses on the dynamic characteristics of the four-freedom gear system with local crack defect to explore the crack nonlinear dynamic mechanism.The dynamic model of the gear system with crack defect,time-variant mesh stiffness and nonlinear clearance are established to investigate theeffect of crack defect on mesh stiffness.The dynamic characteristics with the evolvement of crack and other system parameters are studied by employing harmonic balance method,which reveals the amplitude jump,bifurcation phenomenon and internal resonance.The results obtained here in can provide a theoretical basis for the design and crack fault diagnosis of gearbox.
出处
《大庆石油学院学报》
CAS
北大核心
2012年第3期110-114,12,共5页
Journal of Daqing Petroleum Institute
基金
国家自然科学基金重点项目(10632040)
关键词
齿轮传动系统
裂纹故障
时变啮合刚度
非线性间隙
谐波平衡法
gear system
cracked failure
time-variant mesh stiffness
nonlinear clearance
harmonic balance method
