前麦弗逊悬架和后多连杆悬架设计 - 图文 下载本文

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摘要

悬架的主要功能是传递作用在车轮和车身之间的一切力和力矩,缓冲传给车身的冲击载荷,通过减震器衰减由车轮引起的簧上震动,保证汽车行驶的平顺性,保证车轮在路面不平和载荷变化时有理想的运动特征,增强汽车的操纵稳定性,轻便性。

本文首先论述了悬架的分类、优缺点及国内外的研究现状,然后以日产天籁为设计参照,使用传统设计方法(非优化设计)设计计算前麦弗逊悬架和后多连杆悬架,涵盖了选定悬架质量分配系数,选定车震频率、偏频比,计算悬架静挠度和动挠度,减震器行程及工作缸内径的选择及螺旋弹簧的直径、工作圈数设计等。

本次设计中使用UG软件做出三维模型,再进行装配,装配完成后,将其分别导入ADAMS/car和adams/view中进行仿真分析和动画仿真,得出汽车行驶时的仿真动画、整车车轮前束角、整车车轮外倾角、前轮主销内倾角、前轮主销后倾角、摩擦半径、后轮侧倾中心坐标的相关数据变化。

在介绍了主动悬架和半主动悬架之后,阐述了他们之间以及相对于传统悬架之间的

优缺点、前麦弗逊悬架和后多连杆悬架减震器可行的改良方法,以及未来研究方向,最后对此次设计设计进行一次回顾,总结设计中的收获和存在的问题。

关键字:麦弗逊式悬架、多连杆悬架、三维模型、运动仿真、仿真分析 中图分类号:U463.33+1

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Abstract

The main function of the role of the suspension is to pass all the forces and moments

between the wheel and the body, buffer the impact load transmitted to the vehicle body, damp vibration caused by the wheels through shock absorber to ensure the car ride comfort, assure that there are ideal exercise characteristics while in the road surface roughness and load variations, and enhance handling and stability of the car.

This paper first discusses the classification of the suspension, the pros and cons and

research status, then Nissan Teana reference design, using traditional design methods to calculate the front McPherson suspension and rear multi-link suspension, including car shock frequency is selected, suspension deflection calculation, selection and design of the damper and springs, and the like.

Make use of three-dimensional model by UG software , after the completion of the

assembly,get it into ADAMS simulation, then related data such as the toe angle , camber angle, kingpin inclination angle, caster angle, Scrub radius,roll center location are obtained.

After the introduction of active suspension and semi-active suspension, describes the

advantages ,disadvantages and the future research directions between them, Finally, the design is summarized.

Keywords: McPherson suspension, multi-link suspension, three-dimensional model, motion simulation,Simulation Analysis

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