基于catia和adams的麦弗逊悬架运动分析_毕业设计.doc

PAGE PAGE 54 基于catia和adams的麦弗逊悬架运动分析 摘 要 悬架系统是汽车最重要的零部件之一，悬架的运动学特性直接影响到汽车操作稳定性和使用性能，悬架运动学的研究是汽车研究开发中最重要课题之一。 本文介绍了汽车悬架系统运动学的研究现状，并对独立悬架系统做了详细的分类和对比分析，选取麦弗逊悬架系统最为本文的研究对象，详细分析了麦弗逊悬架系统的结构组成、布置形式及运动特性，并利用CATIA软件建立了麦弗逊悬架的三维模型，并通过装配设计，完成了麦弗逊悬架系统模型的装配。最后，通过机械系统动态仿真软件ADAMS，对麦弗逊悬架进行运动仿真分析，模拟在车轮上下跳动的运动激励下，测定出麦弗逊悬架的定位参数特性曲线，并对其做一个简单的分析。 关键词：麦弗逊悬架；运动学仿真；CATIA；车轮定位参数 Abstract The suspension is one of the most vital components of a vehicle. The kinematics characteristic is directly related to handing and stability, and use performance of the automobile. And the study of suspension kinematics is one of the most important subjects of research of vehicle design. The paper describes the current research status of the kinematics of automotive suspension system, through the specific classification and analysis of the automotive independent suspension system, Macpherson suspension system was chosen to be analyzed, through the analysis of the structure, arrangement and dynamic characteristics of the Macpherson suspension, a virtual prototype model was accomplished by the assembly design of the 3D models of this suspension system, by using the software ADAM. In the end, the Macpherson suspension is analyzed by multi-body system dynamics software ASAMS. The Macpherson suspension mechanism was driven by the up and down movement of the wheel, the determination of the positional parameter characteristic of the McPherson suspension, and making a simple analysis. Keywords: McPherson suspension; kinematics simulation; CATIA; wheel alignment parameters 目 录 TOC \o 1-3 \h \z \u 1 绪论 h 1 1.1 悬架的概述 h 1 1.2 悬架的结构 h 1 1.2.1 弹性元件 h 2 1.2.2 减振器 h 3 1.2.3 导向机构 h 4 1.3 国内外悬架发展趋势 h 4 2 麦弗逊悬架概况 h 6 2.1 麦弗逊悬架简介 h 6 2.1.1 麦弗逊悬架发展史 h 6 2.2 麦弗逊悬架结构特点 h 6 2.2.1 麦弗逊悬架的优缺点 h 7 2.3 麦弗逊悬架的研究现状和实际应用 h 8 2.3.1 研究现状 h 8 2.3.2 实际应用 h 8 3 麦弗逊悬架模型的建立 h 9 3.1 CATIAV5R17软件简介 h 9 3.2 建模思路 h 9 3.3 减震器和螺旋弹簧模型的建立 h 10 3.3.1 减震器模型的建立 h 10 3.3.2