汽车前悬架下摆臂的逆向设计与有限元分析  

Reverse Design and Finite Element Analysis of the Lower Swing Arm of Automobile Front Suspension

作　　者：张平 庄楷 陈森昌 Zhang Ping;Zhuang Kai;Chen Sen-chang(School of Automobile and Transportation Engineering,GuangDong Polytechnic Normal University,Guangzhou 510665,China;School of Mechatronic Engineering,GuangDong Polytechnic Normal University,Guangzhou 510665,China)

机构地区：[1]广东技术师范大学汽车与交通工程学院,广东广州510665 [2]广东技术师范大学机电学院,广东广州510665

出　　处：《内燃机与配件》2024年第5期34-36,共3页Internal Combustion Engine & Parts

摘　　要：逆向工程与计算机辅助设计及有限元分析相结合,可显著提高新产品的开发效率,实现产品快速制造和降低开发成本。本文以某车型前悬架下摆臂为研究对象,通过三维扫描仪采集下摆臂的点云数据,对点云数据进行处理与简化。使用CATIA软件对前悬架下摆臂进行逆向设计,建立前悬架下摆臂的三维模型。使用Geomagic Qualif软件对建立好的模型进行误差分析,平均偏差在0.6mm范围内。对表面粗糙、不连贯及曲面不连续现象进行曲面光顺处理和局部结构优化,优化后的下摆臂模型表面平整、曲面光滑流畅,符合零件设计要求。利用惯性释放原理,使用ANSYS软件分别对逆向设计的下摆臂模型的三种典型工况进行静力分析,得到下摆臂的应力云图。结果表明各种工况下的下摆臂应力均满足强度要求。The combination of reverse engineering,computer-aided design and finite element analysis can significantly improve the development efficiency of new products,achieve rapid product manufacturing,and reduce development costs.The lower swing arm of a certain automobile front suspension was the research object in this article.The point cloud data of the lower swing arm was collected using the 3D scanner,and subsequently was processed and simplified.The front suspension lower arm was reverse designed using CATIA software,and a three-dimensional model of the front suspension lower arm was established.The error of the established model was analyzed using Geomagic Qualify software.The average deviation was within the range of 0.6mm.Surface smoothing and local structural optimization were carried out for surface roughness,discontinuity,and surface discontinuity.The final lower arm model was conducted with flat and smooth surfaces.This met part design requirements.Using the principle of inertia release,the lower swing arm model was statically analyzed using ANSYS software based on three typical working conditions,and the stress cloud map of the lower swing arm was obtained The results showed that the lower swing arm under various working conditions met the strength requirements.

关 键 词：下摆臂 逆向设计 有限元分析 三维扫描 

分 类 号：TK412[动力工程及工程热物理—动力机械及工程]