基于ADAMS车悬架设计与仿真.doc

基于ADAMS的轿车悬架设计与仿真 摘 要 悬架系统是汽车的车架与车桥或车轮之间的一切传力连接装置的总称。典型的悬架结构由弹性元件、导向机构以及减振器等组成，对汽车操纵稳定性与平顺性有重要的影响。本文所研究车型的悬架系统为前麦弗逊悬架后多连杆悬架，该系统是目前国内B级车普遍采用的布置形式。这种悬架系统即有着优良的平顺性与操纵性，又较好的控制了成本，具有较强的代表性。ADAMS/CAR模块内有悬架系统运动学分析的专门模板，可以方便地建立各种结构形式的悬架，迅速得出悬架的三十多种参数的性能曲线，可方便地对设计参数进行修改和调整以发现其对各种性能参数的影响。 首先通过对所选车型的理论分析与计算，确定悬架系统初始设计数据。再借助CATIA建立了悬架总体与各零件的三维模型，并通过GSA模块校核各零件强度与刚度。运用ADAMS/CAR分别建立麦弗逊悬架与多连杆悬架模型，进行悬架的运动学仿真，得出悬架主要运动数据。继而通过对仿真结果的分析，对原有设计进行修改与优化，确定合理了的设计数据。最终通过AutoCAD绘制悬架系统总装工程图与零件工程图，完成悬架设计任务。 本文研究了悬架系统的设计与运动学分析，探讨了乘用车悬架机构优化设计问题。运用CAE技术实现了悬架运动学优化与强度校核，实现了悬架的合理设计。 关键词：悬架优化设计运动学分析ADAMS the Design and Simulation of Vehicle Suspension System Based on ADAMS Abstract The suspension system is the general term for the transmission which connect device between the vehicle frame and axle or wheel. The typical structure of the suspension is the composited of the bedspring, guider as well as vibration damper, the suspension system perform an important function on drivability and harshness. The vehicle suspension system studied in this paper is the former McPherson suspension and multi-link suspension, this suspension system is very popular among the B-Class car in China. This suspension system is not only has the excellent drivability and handling but also has a strong representation on controlling of costs. There are many unique modules for the kinematics of suspension and dynamics analysis in ADAMS/CAR, you can easily create a variety of structural forms of suspensions and get 30 kinds of the performance curve of the suspension .The parameters is modified and adjusted very easily to detect its impact on various performance parameters. At first, we get the initial design data of the suspension system by the analysis and calculation of the selected models. And then the three-dimensional models of the suspension are established with the CATIA, and through the GSA module to check the strength and stiffness of each part. McPherson suspension and multi-link suspension model are established in ADAMS