变速箱吊架悬置系统优化与评测  

Optimization and Evaluation of Suspension Hanger System for Gearboxes

作　　者：陈星晨 吴迪 付麒 令海强 

机构地区：[1]东风神宇车辆有限公司,湖北十堰442000

出　　处：《工业技术创新》2018年第1期44-46,共3页Industrial Technology Innovation

摘　　要：变速箱吊架悬置系统由三点式改装为四点式的优化设计,解决了空间布置和怠速抖动等问题。优选软垫安装角度,对上、下支架实施拓扑优化。通过有限元方法对吊架模态、应力、变形、疲劳性能开展分析,通过试验场50 000 km耐久性试验对成型产品进行评测。吊架在各种工况下的最大等效应力均小于材料许用应力355 MPa;吊架整体变形远小于1 mm;应力集中点由3个降为2个;隔振效率由64.5%提升至83.7%。成型产品受到了改装厂家和用户的认可,总体思路有潜力应用于其他汽车零部件的结构设计。In order to solve the problems such as size arrangement and idling, the optimization strategy of substituting the 3-point type into the 4-point type is proposed for the suspension hanger system of gearboxes. The installation angle of the cushion is optimized; the topology optimization is carried out for the upper and lower supports. The modal, stress, deformation and fatigue performance of hangers are analyzed by finite element method, and the molded products are evaluated through the test field 50 000 km durability test. The maximum equivalent stresses of hangers under various working conditions are all less than 355 MPa of material allowable stress. The overall deformation of hangers is far less than 1 mm. The amount of stress concentration point is reduced from 3 to 2. The vibration isolation efficiency is increased from 64.5% to 83.7%. The molded products have been widely accepted by the modification manufacturers and users, and the overall idea has the potential to be used in the structure design of other vehicle parts.

关 键 词：变速箱吊架 结构设计 疲劳分析 应力与形变 

分 类 号：U467.1[机械工程—车辆工程]