摘要本课题以大学生方程式赛车队2015年的赛车为研究对象，针对赛车在年中国大学生方程式汽车大赛中悬架系统暴露出的问题进行改进设计，并对悬架刚 度进行重新计算，优化结构设计，最终达到良好的操纵稳定性和驾驶平顺性的目标。69419

在本次悬架系统的改进设计中严格遵守大赛规则，对存在的问题进行有针对性的优 化。对四轮的定位参数进行重新选取，设计全新的悬架几何，为悬架系统能够提供更高 的侧倾角刚度重新计算所需的弹簧刚度，查找相关资料，对前横向稳定杆所需提供的刚 度进行计算，同时进行结构的改进设计。并用ADAMS/Car进行仿真，分析仿真结果与设 计理论的差异，使计算结果有据可依。在保证零部件可靠性的同时进行大胆的轻量化设 计，减小非簧载质量，在2015年的基础上进一步提高悬架性能。

毕业论文关键词 大学生方程式 悬架 优化 侧倾角刚度 仿真 轻量化设计

毕 业 设 计 说 明 书 外 文 摘 要

Title  The improvement design of NUT vehicle suspension    in 2015 season                   

Abstract

This research is carried out by studying the racing car designed and manufactured in 2015 by FSC Racing Team of Nanking University of Science and Technology. Based on the problems reflected by suspension system of the car during its participation in FSC in 2015, the research refines the system, recalculates suspension rate and optimizes structural design in order to achieve the ultimate goal of favorable handling stability and driving smoothness.    

This research strictly abides by FSC regulations to optimize suspension system according to its existing problems. The researcher chooses new four-wheel alignment parameters, designs new suspension geometry, recalculates the spring rate which allows the suspension system to provide higher heeling angle stiffness. Besides, the researcher refers to related materials to calculate the stiffness the front Torsion-Bar Spring needs to provide and optimize structural design. In addition, the researcher uses ADAM/CAR for simulation, and then analyzes the differences between the results of simulation and theoretical design to make calculations reliable. Moreover, the researcher proposes adventurous lightweight design which alleviates unsprung mass at the premise of guaranteeing the reliability of parts to improve the performance of suspension system in 2015. 

Keywords FSC suspension optimization heeling angle stiffness simulation lightweight design 

本科毕业设计说明书 第 I 页

目 次

1     引言  1 

1.1 FSC  赛事简介 1

1.2 研究背景及意义 2

1.3 国内外研究现状 3

1.4 本课题要解决的问题和拟采用的研究手段 4

2     悬架系统设计  5 

2.1    悬架系统介绍及设计目标  5 

2.2    悬架系统的规则限制与设计方法  6 

2.3    悬架系统的初步设计  7 

2.4    悬架系统的参数设计  10 

2.5    悬架系统的零部件设计  15 

2.6 本章小结