基于换挡冲击问题的传动系统稳态及动态性能研究  

RESEARCH ON STEADY STATE AND DYNAMIC PERFORMANCE OF TRANSMISSION SYSTEM BASED ON SHIFT SHOCK PROBLEM

作　　者：常光宝 李宏庚 王田修 刘杰昌 黄元毅 CHANG GuangBao;LI HongGeng;WANG TianXiu;LIU JieChang;HUANG YuanYi(SAIC-GM-Wuling Automobile Co.,Ltd.,Liuzhou 545000,China;School of Mechanical Engineering,Shanghai Jiaotong University,Shanghai 200240,China)

机构地区：[1]上汽通用五菱汽车股份有限公司,柳州545000 [2]上海交通大学机械与动力工程学院,上海200240

出　　处：《机械强度》2023年第6期1403-1408,共6页Journal of Mechanical Strength

摘　　要：为解决汽车换挡出现异响的问题,建立飞轮-离合器-变速箱-传动轴-驱动轴-轮胎的7自由度的传动系统动力学模型,利用建立的数学模型,可以得到传动系统的固有频率以及主振型。借助Adams软件搭建传动系统的多体动力学模型,进而对模型进行模态解析计算,可以得到影响换挡冲击的主要动能集中在飞轮、主要势能集中在驱动半轴。从激励源入手,构建离合器减振特性模型,对离合器间隙角进行灵敏度分析,可以得出,间隙角越大,换挡冲击共振越明显。因此,针对飞轮转动惯量、驱动半轴刚度、离合器间隙角进行优化设计,并且安装在实车上进行验证,结果表明:安装优化后的各部件,该车辆的换挡冲击问题得到有效的改善,表明建立的模型以及分析方法,对改善换挡冲击问题具有指导意义。In order to solve the problem of abnormal noise when the car is shifted,the dynamic model of transmission system with 7 degrees of freedom is established.The model contains flywheel,clutch,gearbox,transmission shaft,drive shaft and tire.Using the established mathematical model,natural frequency and main vibration shape of the transmission system can be obtained.With the help of Adams software to build a multi-body dynamics model of the transmission system,and then perform modal analysis calculations on the model,the main kinetic energy that affects the shift shock is concentrated in the flywheel,and the main potential energy is concentrated in the drive half shaft.Starting from the excitation,constructing the clutch vibration damping characteristic model,and analyzing the sensitivity of the clutch clearance angle,it can be concluded that the larger the clearance angle,the more obvious the shift shock.Therefore,the optimized design is carried out for the flywheel inertia,drive axle stiffness,and clutch clearance angle,and is installed on the real vehicle for verification.The results show that the shift shock of the vehicle is effectively improved by installing the optimized components.The established model and analysis method have guiding significance for improving the shift shock.

关 键 词：换挡冲击 数学模型 多体动力学模型 模态解析计算 间隙角 

分 类 号：U467.1[机械工程—车辆工程]