纯电动汽车两挡自动变速器壳体振动特性研究  

Research on Vibration Characteristics of Two-Speed Automatic Transmission Housing for Pure Electric Vehicles

作　　者：王毅[1] 陈勇[1] 代青林 张浩南 武一民[1] 田乃利 贺伯林 Wang Yi;Chen Yong;Dai Qinglin;Zhang Haonan;Wu Yimin;Tian Naili;He Bolin(Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles,Hebei University of Technology,Tianjin 300401,China;CNC Driveline Technology Co.,Ltd.,Zhuhai 519060,China)

机构地区：[1]河北工业大学天津市新能源汽车动力传动与安全技术重点实验室,天津300401 [2]珠海华粤传动科技有限公司,广东珠海519060

出　　处：《机械传动》2023年第9期81-88,共8页Journal of Mechanical Transmission

基　　金：宁波市2025重大科技专项项目(2019B10111)。

摘　　要：以一款纯电动车两挡双离合自动变速器(2DCT)为研究对象,首先,开展变速器壳体模态仿真与试验,验证了壳体有限元模型的准确性;然后,考虑电动机工作效率因素,利用建立的变速器传动系统动力学模型,得到不同转矩工况下的齿轮副传递误差变化规律;分析轴承动态力,并将其作为边界条件,研究了壳体的振动特性;通过分析模态参与因子(Modal Participation Factor,MPF),确定对壳体振动贡献较大的模态阶次;最后,对振动明显区域进行多工况的振动加速度仿真和试验测试,验证了传动系统动力学模型的准确性,进一步明确了2DCT壳体的振动特性。The research object is a two-speed double clutch automatic transmission(2DCT)of pure elec⁃tric vehicles.Firstly,the modal simulation and test of the transmission housing are carried out to verify the accu⁃racy of the finite element model of the housing.Then,considering the working efficiency of the motor,through the established dynamic model of the transmission system,the variation law of the transmission error of the gear pair under different torque conditions is obtained.The dynamic force of the bearing is further analyzed and taken as the boundary condition to study the vibration characteristics of the housing.By analyzing the modal participation factor(MPF),the modal order which contributes greatly to the shell vibration is determined.Finally,the vibration acceleration simulation and test of the obvious vibration area under multiple working conditions not only verify the accuracy of the dynamic model,but also further clarify the vibration characteristics of the 2DCT housing.

关 键 词：电动汽车 两挡变速器 壳体 传递误差 模态参与因子 

分 类 号：U469.72[机械工程—车辆工程]