某SUV汽车多连杆后独立悬架设计与分析本科毕业论文.docx

1、安徽工程大学机电学院毕业设计（论文）某SUV汽车多连杆后独立悬架设计与分析摘要近年来，随着汽车工业的快速发展，人们对汽车的操纵稳定性和乘坐舒适性的要求越来越高，因此对汽车的悬架系统也提出了更高的要求。多连杆式独立悬架以其综合指 标过硬、兼顾操控性和行驶舒适性在内的多种特性受到广大消费者的青睐。然而多年以 来，结构复杂、成本高昂、舒适性较好的多连杆式独立悬架只用于豪华轿车，或少部分 定位较高端的中高级别轿车。伴随着汽车制造技术的不断提升，零部件单位生产成本逐 步降低，汽车厂商们开始更多的在低端轿车上装备这种结构复杂、性能优异的悬架，以 此来提高车辆在行驶过程中的综合表现，并在同级别车型中形成鹤立

2、鸡群的效应。我这 次设计的奔驰 GLK300的悬架系统正是符合大众的需求，采用多连杆式独立悬架。本次设计的主要内容是：奔驰GLK300SU的V 后悬架系统的设计，后悬架采用目前较为流行的多连杆式独立悬架系统。减振器采用双作用液力减振器，并对其进行参数计算。 对导向机构和横向稳定杆进行结构计算及强度校核。采用 CATIA软件对多连杆式独立悬架的零件进行建模并对悬架进行装配。同时采用CATIA软件对悬架的性能进行分析，论 证悬架系统设计参数的合理正确性。在这次设计中，采用了性能较好的多连杆式独立悬架系统，虽然多连杆式独立悬架 还未广泛应用于中低端轿车，但随着成本的降低，此悬架系统将越来越多的得到使

3、用。 通过 CATIA软件对悬架系统的建模及对其进行仿真优化，验证了多连杆式独立悬架的优异性能。因此，这次设计的悬架系统具有广泛的发展前景。关键词：多连杆；独立悬架；仿真优化；CATIAA SUV multi-link independent rear suspension of automobiledesign andanalysisAbstractIn recent years, with the rapid development of automobile industry, people on the handling stability and riding comfort of

4、the increasingly high demand, so the cars suspension system is also put forward higher requirements. Multi-link independent suspension with its comprehensive index, consideration of different characteristics of excellent handling and ride comfort, favored by the vast number of consumers. However, ov

5、er the years, complex structure, high cost, comfort good multi-link independent suspension is used only for luxury cars, or a few more high-end positioning in high-grade car. Along with the automobile manufacturing technology continues to improve, spare parts production costs per unit decrease gradu

6、ally, the automobile manufacturers began more equipment of this structure in the low-end cars complex, excellent performance of suspension, in order to improve the comprehensive performance of vehicles in the process, and the effect of forming in the same stand head and shoulders above others dont m

7、odels. Suspension system I the design of the Mercedes-Benz GLK300 is in line with the needs of the public, the multi-link independent suspension.The design of the main content is: the design of rear suspension system of the Mercedes-Benz GLK300SUV, rear suspension uses the popular multi-link indepen

8、dent suspension system.Damper adopts double acting hydraulic shock absorber, and parameter calculation of its. The guide mechanism and a transverse stable rod structure calculation and strength check. The components of CATIA software for multi-link independent suspension modeling and assembly of sus

9、pension. At the same time were analyzed by CATIA software performance of suspension, reasonable design parameter argumentation suspension system.In this design, the multi-link independent suspension system with better performance, although the multi-link independent suspension is not widely used in

10、the low-end cars, but with lower costs, this suspension system will be more and more use. Through the CATIA software model of suspension system and simulation and optimization of its, verify the multi-link independent suspension performance. Therefore, the design of the suspension system has a broad

11、 development prospects.Keywords：Connecting rod；independent suspension；Simulation optimization；CATIA目录引言. - 7 -第 1 章概述. - 11 -悬架系统概述.-.1.1.-.第 2 章悬架分类及选择. - 14 -2.1非独立悬架.-.1.4.-.2.2独立悬架.-.1.4.-.2.2.1 横臂式悬挂系统. - 14 -2.2.2 多连杆式悬挂系统. - 15 -2.2.3 纵臂式悬挂系统. - 15 -2.2.4 烛式悬挂系统. - 15 -2.2.5 麦弗逊式悬挂系统. - 15 -2.3 2.2.6主动悬挂系统. - 16 -辅助元件.-.1.6.-.2.3.1 横向稳定器. - 16 -2.3.2缓冲块. - 17 -第 3 章悬架参数计算. - 18 -3.1参数选定.-.1.8.-.3.1.1 自振频率. - 18 -3.1.2 悬架刚度. - 18 -3.1.3 悬架静挠度. - 18 -3.1.4悬架动挠度. - 19 -第 4 章弹性元件的设计计算. - 20 -4.1弹簧中径、钢丝直径、及结构形式.-.2.0.-.4.2弹簧圈数.-.2.0.-.第 5 章悬架导向机构设计.