电子换挡器操纵机构刚柔耦合动静态特性分析  

Analysis of Dynamic and Static Characteristics of Rigid-Flexible Coupling of Electronic Gear Shifter

作　　者：陈滔 刘敏[1] 陈育荣[1] 李晓峰 孙道成 Chen Tao;Liu Ming;Chen Yurong;Li Xiaofeng;Sun Daocheng(Hubei University of Automotive Technology,Shiyan 442002,China;Hubei Dafeng Automotive Intelligent Control System Co.Ltd,Shiyan 442012,China)

机构地区：[1]湖北汽车工业学院,湖北十堰442002 [2]湖北达峰汽车智能控制系统有限公司,湖北十堰442012

出　　处：《湖北汽车工业学院学报》2023年第3期6-11,共6页Journal of Hubei University Of Automotive Technology

基　　金：湖北省教育厅科研计划项目(D20211803);湖北汽车工业学院博士科研启动基金(BK202001)。

摘　　要：以某重型商用车电子换挡器为研究对象,基于刚柔耦合多体系统动力学,获取典型挡位不同工况下关键点的动载荷。将动载荷作为输入,建立有限元模型,对关键零部件进行强度分析,分析不同工况下换挡器结构的可靠性。结果表明:所有工况下零部件关键点处载荷的仿真值与理论值误差均小于20%,理论计算和仿真结果一致;关键零部件易失效位置在零部件接触和螺栓连接处;上盖、下盖、子弹头达到了设计的预期结果,换挡槽强度需进一步优化;刚柔耦合多体系统动力学分析与有限元分析相结合,缩短了复杂装配体静强度分析时间。A electronic gear shifter for heavy commercial vehicles was taken as the research object,based on the multi-body system dynamics of rigid-flexible coupling,the dynamic loads at key points of typical gears was obtained under different working conditions.The decoupled dynamic loads were used as input to establish a finite element model and analyze the strength of key components,so as to find the maximum stresses under different working conditions and analyze the reliability of the shifter structure.The experimental results show that the error between the simulated and theoretical values of the load at the key points of the components under all working conditions is less than 20%,which basically achieves the consistency between theoretical calculation and simulation results.The key components are prone to fail at the component contact and bolt connection.The upper cover,lower cover,and war⁃head achieve the expected design effect,but the strength of the gear-shifting groove needs to be further optimized.The combination of multi-body system dynamics analysis of rigid-flexible coupling and fi⁃nite element analysis significantly reduces the static strength analysis time of complex assemblies.

关 键 词：电子换挡器 刚柔耦合 有限元分析 静动态特性 

分 类 号：U463.2[机械工程—车辆工程]