某型越野车悬架系统设计双横臂扭杆弹簧独立悬架设计
关键字：悬架系统 设计 分析 CATIA CAD
毕业论文设计说明书外文摘要
Title Design of the Suspension System of A Type of Off-road Vehicle --Design of Double Wishbone Independent Suspension with Torsion Bar Spring
Abstract
The comfort and safety of the car are determined by the vehicle suspension . Suspension system is made of spring,shock absorber,guiding mechanism and stabilizer. In this design ,the focus is the overall design and structural design of the suspension system.With a certain type of off-road vehicle as the background,the design and analysis of the overall structure of the suspension are completed,and the final selection is the double wishbone independent suspension with torsion bar spring.With high requirement of comfort and security,the four parts mentioned above are designed.In addition,CATIA is used to build three-dimensional modeling of the subsystems,and analyze them in a clear way.Finally,CAD is used to finish the two-dimensional drawing of the parts and assemblies ,for production design.
Keywords Suspension Design Analysis CATIA CAD
目 录
1 绪论 1
1.1 悬架系统简介 1
1.2 双横臂扭杆弹簧独立悬架研究现状 2
2 悬架系统的设计 3
2.1 设计主要问题和要求 3
2.2 设计方案论证 3
2.3 双横臂扭杆弹簧独立悬架结构分析 4
3 悬架主要参数确定 8
3.1悬架的空间几何参数 8
3.2 悬架主要参数的确定 8
3.2.1 悬架偏频和静挠度 8
3.2.2悬架动挠度 9
3.2.3 悬架弹性特性 10
3.2.4 悬架侧倾角刚度 10
4 悬架各构件的设计 12
4.1 弹性元件的设计 12
4.1.1扭杆弹簧简介 12
4.1.2 扭杆弹簧尺寸设计 12
4.1.3 扭杆弹簧刚度强度校核 17
4.2 减振器的设计 18
4.2.1 减振器简介 18
4.2.2 相对阻尼系数 18
4.2.3 减振器阻尼系数 19
4.2.4 最大卸荷力 20
4.2.5 减振器工作缸直径D 21
4.2.5 导向座宽度及活塞宽度 22
4.2.5 油液的选择 22
4.2.6 稳定性校核 23
4.3 导向机构的设计 24
4.3.1导向机构简介 24
4.3.2 导向机构布置参数 25
4.3.3 导向机构设计方案 26
4.4 稳定杆的设计 29