驱动桥壳的试验模态分析及优化设计  

Experimental Modal Analysis and Optimal Design of Drive Axle Housing

作　　者：郭冬青[1] 张翠平[1] 杨辉[1] 周驰[1] 

机构地区：[1]太原理工大学机械工程学院,山西太原030024

出　　处：《机械设计与制造》2015年第1期211-213,216,共4页Machinery Design & Manufacture

基　　金：山西省自然科学基金项目(2013011041-3)

摘　　要：汽车驱动桥壳是汽车上的主要承载构件之一,主要用于支撑并保护主减速器、差速器和半轴等,使左右驱动车轮的轴向相对位置固定。通过试验模态分析、有限元分析及静力分析,发现了所研究的驱动桥壳在强度和刚度上有很大裕度,基于此,采用尺寸优化技术对驱动桥壳进行优化,优化后驱动桥壳本体中间部分厚度从16mm减小到11mm,加强圈的厚度从23mm减小到19mm,并进行了优化后的桥壳的静力分析和模态分析,优化后桥壳的质量变化率达到27.3%,轻量化效果明显,节约了材料,结构更加合理,研究成果具有一定的工程意义。A utomobile drive axle housing is one of the main bearing components on the car,being mainly used to support and protect the lord reducer,differential and half shaft etc.,making the drive wheels around the axial relative on fixed position.Experimental modal analysis,finite element analysis and static analysis are done.The study finds that the drive axle has a great margin in strength and stiffness.Based on this,the drive axle housing is optimized using size optimization technique.After optimization,the thickness of the middle part of the body of the drive axle is reduces from 16mm to 11mm,and the thickness of strengthening ring reduces from 23mm to 19mm.Static analysis and modal analysis is done again on optimized axle in addition.After optimization,mass change rate reaches 27.3 percent,having an obvious lightweight effect.The material is saved and the structure is more reasonable.Research results have certain engineering significance.

关 键 词：驱动桥壳 试验模态 有限元分析 尺寸优化 

分 类 号：TH16[机械工程—机械制造及自动化] U463[机械工程—车辆工程]