计及干摩擦的风电齿轮断齿故障动力学分析  

Dynamic Analysis of Tooth Breakage Fault of Wind Turbine Gear Considering Dry Friction

作　　者：刘森 苏召明 张旭[1] LIU Sen;SU Zhaoming;ZHANG Xu(School of Mechanical Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]天津工业大学机械工程学院,天津300387

出　　处：《组合机床与自动化加工技术》2023年第6期136-140,144,共6页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金项目(51805369);天津市科技计划项目(20YDTPJC00820)。

摘　　要：为了揭示齿面摩擦影响风电齿轮传动系统中定轴齿轮断齿故障动力学行为变化的机理,基于库伦摩擦定律,计算定轴轮系和行星轮系轮齿间的齿面摩擦力。通过改变齿宽模拟断齿故障,应用势能法得到定轴齿轮断齿后的时变啮合刚度;考虑干摩擦、时变啮合刚度、传递误差、齿侧间隙和阻尼,建立含一级定轴齿轮断齿故障的风电齿轮传动系统动力学模型;通过分析一级定轴齿轮啮合点的相对位移随系统啮合频率变化的分岔图、相图和Poincare截面,研究定轴齿轮的动力学特性。结果表明,齿面摩擦在高频区域对系统的分岔形式较为明显,相图和Poincare截面的形状复杂多变,系统混沌区间增加,加剧了断齿对系统稳定性的影响。In order to reveal the mechanism of tooth surface friction affecting the dynamic behavior change of the tooth breakage of fixed shaft gear in wind power gear transmission system,the tooth surface friction between fixed shaft gear train and planetary gear train was calculated based on Coulomb friction law.By changing the tooth width to simulate the tooth breakage fault,the potential energy method was used to obtain the time-varying meshing stiffness(TVMS)of the fixed shaft gear after the tooth breakage.Considering dry friction,TVMS,transmission error,tooth clearance and damping,a dynamic model of wind turbine gear transmission system with a fixed shaft gear tooth failure was established.By analyzing the bifurcation chart,phase chart and Poincare section of the relative displacement of the meshing point of the first stage fixed shaft gear with the change of the meshing frequency of the system,the dynamic characteristics of the fixed shaft gear were studied.The results show that the bifurcation form of tooth surface friction is obvious in the high frequency region,the shape of phase diagram and Poincare section is complex and changeable,and the chaotic interval of the system increases,which aggravates the influence of broken teeth on the stability of the system.

关 键 词：风电齿轮传动系统 断齿故障 齿面摩擦 时变啮合刚度 

分 类 号：TH16[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]