文档介绍：河南科技大学
毕业论文
题目_方程式赛车前、后悬架及转向系统设计(前、后悬架)
姓名____王凯____
院系_车辆与动力工程学院__
专业___车辆工程_____
指导教师____牛毅____
2010年 05 月 16 日
摘要
本设计为中国大学生方程式汽车大赛(Formula SAE - China,简称"FSAE")赛车前、后悬架总成设计。悬架总成是汽车的一个重要组成部分,它的功用是把路面作用于车轮上的垂直反力、纵向反力和侧向反力以及这些反力所造成的力矩传递到车架上,以保证汽车的正常行驶。
本次设计根据大学生方程式汽车大赛的比赛规则及赛车设计具体参数要求,参考各种赛车悬架资料,分析各种悬架类型的优缺点,并最终确定适合赛车运动的悬架形式---不等长双横臂式螺旋弹簧独立悬架。
设计中运用运动学原理分析各机构运动关系、确定尺寸参数,运用理论力学、材料力学知识计算悬架各部件的受力,以满足各零部件的强度要求。本次设计运用了CAXA2009画平面图,并运用UG NX ,进行运动分析和高级仿真。
关键词:悬架,减振器,建模,运动分析
ABSTRACT
This design for Chinese University students formula car contest (Formula SAE-China, referred to as "FSAE.") racing front and rear suspension design. Suspension Assembly is an ponent of the car, its function is to act on the pavement on vertical force, longitudinal force and lateral force as well as the reaction caused by the moment passed to the frame, in order to ensure that the vehicle's normal driving.
This design according to the formula of college car racing rules and concrete parameters design requirements, refer to the data of many racing suspension , analysis of the advantages and disadvantages of various suspension type, and ultimately determine the suitable for motor sport suspension---differ long double wishbone arm typed spiral spring independent suspension.
In the design application kinematics analysis of the relationship between the various bodies exercise、determine the size parameters, use of theoretical mechanics, material mechanics calculation of the ponents of suspension force to meet the strength requirements of all parts This design employs CAXA2009 draw the floor plan, and to use UG NX establish suspension models, kinematic analysis and advanced simulation.
KEY WORD:Suspension, shock absorbers, modeling, motion analysis
符号说明
M 汽车总质量,Kg
L 轴距,mm
B1 前轮距,mm
B2 后轮距,mm
hg 最小离地间隙, mm
G1 满载时前轴负荷分配, N
G2 满载时后轴负荷分配, N
R 车轮半径,mm
B 轮胎宽度,mm
k 动载系数,1
ψ附着系数,mm
γ主销后倾角,mm
β主销内倾角,°
α车轮外倾角,°
C 主销偏置距,°
N 弹簧有效圈数,1
ω1 前悬架偏频,Hz
ω2 后悬架偏频,Hz
目录
第一章