摘要
驱动桥是微车传动系统的核心部件之一,承受复杂的载荷,影响整车的安全、舒适和动力,其振动和噪声对整车舒适性(NVH)性能有重要影响。为掌握驱动桥振动响应的影响规律,实现驱动桥动态特性的主动控制,本文以驱动桥准双曲面齿轮传动系统为研究对象,考虑主从齿时变啮合刚度、阻尼、传动误差和冲击等激励,基于集中质量法构建驱动桥齿轮传动系统的多变参数耦合振动模型,并依据牛顿第二定律推导其振动微分方程组,采用RK算法求解方程组;对比准双曲面齿轮修形优化前后主、从动齿轮的垂直、扭转和轴向振动数值解,并讨论输入转速和加载扭矩的改变对系统振动特性的影响规律。结果表明:优化后的齿轮运转振动值减小;主从齿的垂直和轴向振动规律复杂,处于近似混沌运动状态;扭转方向上呈现拟周期运动;输入转速和加载扭矩的改变对主从齿轴向振动影响最大,垂直方向次之,扭转方向最小。进一步对驱动桥总成进行振动测试分析,结果表明,新状态样件的动态性能更优,测试数据的趋势与理论分析结果符合较好。该研究成果可应用于分析驱动桥的关键激励因素,预测振动响应,提升产品的动态性能。
The drive axle is one of the core components of the micro-vehicle transmission system,which bears complex loads and affects the safety,comfort and power of the vehicle.The performance of drive axle has a significant effect on vehicle NVH(noise vibration and harshness).In order to obtain the influence laws of drive axle vibration response and further implementthe active control of the dynamic characteristics,a multi-factor coupling vibration model is established based on lumped mass method considering the key excitations of the hypoid gear transmis-sion system in drive axle,including time-varying mesh stiffness,damping,transmission error and impact.The differential equations of the nonlin-ear vibration model were derived on the basis of Newton’s Law,which are further solved by the Runge-Kutta method.After performing the op-timization of the hypoid gears,the influence laws of input speed and load torque changes on the vibration characteristics are discussed consider-ing the numerical solutions on the verticality,torsion and axial directions for both the driving and driven gears.Computational results indicate that the proposed solution can reduce the gear vibration,and a nearly chaotic phenomenon is caused by the complicated vibration laws of the vertical and axial dimensions for the driving gear and driven gear,while a quasi-periodic state is for the torsional dimension.In addition,the changes in in-put speed and loading torque have the largest impacts on the axial vibration,followed by the vertical dimension,and the smallest in the torsional dimension.The results of the vibration test and data analysis for the gear transmission system also demonstrate that higher dynamic performance can be obtained for optimized samples,which also supports the theoretical analysis of the drive axle.The proposed approach is expected to be ap-plied to improve dynamic performance of certain products by analyzing the key excitation factors and predicting the vibration response of the drive axle.
作者
陈忠敏
侯力
吴阳
魏永峭
赵斐
马友政
夏立峰
CHEN Zhongmin;HOU Li;WU Yang;WEI Yongqiao;ZHAO Fei;MA Youzheng;XIA Lifeng(School of Mechanical Eng.,Sichuan Univ.,Chengdu 610065,China;Research and Development Center,Jian’an Industrial Co.,Ltd.,Yaan 625100,China;School of Mechanical&Electronical Eng.,Lanzhou Univ.of Technol.,Lanzhou 730050,China;School of Manufacturing,Southwest Univ.of Sci.and Technol.,Mianyang 621010,China)
出处
《工程科学与技术》
EI
CAS
CSCD
北大核心
2023年第4期224-238,共15页
Advanced Engineering Sciences
基金
国家自然科学基金项目(51875370)
四川省科技厅项目(2021ZYD0117
2016GZ0347
2018GZ0011)。
关键词
准双曲面齿轮
集中质量法
振动特性
混沌运动
动态性能
hypoid gear
lumped mass method
vibration characteristics
chaotic motion
dynamic performance
