某SUV汽车多连杆后独立悬架设计与分析本科毕业论文11Word文件下载.docx

1、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 automobile designandanalysisAbstractIn recent years, with the rapid development of automo

2、bile industry, people on the handling stability and riding comfort of 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

3、and ride comfort, favored by the vast number of consumers. However, over 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 cont

4、inues to improve, spare parts production costs per unit decrease gradually, 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 effe

5、ct of forming in the same stand head and shoulders above others dont models. 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 Merced

6、es-Benz GLK300SUV, rear suspension uses the popular multi-link independent 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 soft

7、ware for multi-link independent suspension modeling and assembly of suspension. 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

8、, although the multi-link independent suspension is not widely used in 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

9、performance. Therefore, the design of the suspension system has a broad development prospects.Keywords：Connecting rod；independent suspension ；Simulation optimization；目录引言第1章概述悬架系统概述第2章悬架分类及选择2.1非独立悬架2.2独立悬架2.2.1横臂式悬挂系统2.2.2多连杆式悬挂系统2.2.3纵臂式悬挂系统2.2.4烛式悬挂系统2.2.5麦弗逊式悬挂系统2.2.6主动悬挂系统2.3辅助元件2.3.1横向稳定器2.3.2

10、缓冲块第3章悬架参数计算3.1参数选定3.1.1自振频率3.1.2悬架刚度3.1.3悬架静挠度3.1.4悬架动挠度第4章弹性元件的设计计算4.1弹簧中径、钢丝直径、及结构形式4.2弹簧圈数第5章悬架导向机构设计5.1导向机构设计要求5.2导向机构的布置参数5.2.1侧倾中心5.2.2侧倾轴线5.2.3纵倾中心5.2.4抗制动纵倾性5.3.悬架导向机构结构形式选择第6章减振器设计6.1减振器概述6.2减振器分类6.3减振器主要性能参数6.3.1相对阻尼系数6.3.2减振器阻尼系数6.4最大卸荷力F06.5筒式减振器主要尺寸6.5.1筒式减振器工作直径D6.5.2油筒直径Dc第7章横向稳定杆设计第

11、8章平顺性分析8.1平顺性概念8.2汽车的等效振动分析8.3车身加速度的幅频特性8.4相对动载，对的幅频特性8.5影响平顺性的因素第9章多连杆独立悬架三维图9.1CATIA软件的简介9.2悬架三维图结论与展望致谢9参考文献10附录11引言近年来，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提出了更高的要求，而车辆悬架决定和影响车辆行驶的平顺性、操纵稳定性和乘坐舒适性。当前非独立悬架系统逐步被淘汰，独立悬架系统因其车轮触地性良好、乘坐舒适性及操纵安定性大幅提升、左右两轮可自由运动、轮胎与地面的自由度大、车辆操纵性较好等优点目前被汽车厂家普遍采用。而在独立悬架系统中，麦弗逊式悬架系统

12、与拖拽臂式悬挂系统的使用居多。作为综合性能更好的多连杆式独立悬挂系统因为制造成本的原因，应用的还不是很广泛。但随着汽车制造技术的不断提升，汽车厂商们得以逐渐降低零部件的生产成本，多连杆式独立悬架系统将会得到广泛的使用。作为汽车研究的一大热点，有关悬架的期刊或论文虽然较多，但国内关于悬架系统的专著却是屈指可数。无论是在图书馆，还是在网上查找，可查阅的书籍都为数不多。悬架是汽车的车架与车桥或车轮之间的一切传力连接装置的总称，其作用是传递作用在车轮和车架之间的力和力扭，并且缓冲由不平路面传给车架或车身的冲击力，并衰减由此引起的震动，以保证汽车能平顺地行驶。图1-1梅赛德斯-奔驰CLK车型多连杆悬架悬

13、架是汽车中的一个重要总成，它把车架与车轮弹性地联系起来，关系到汽车的多种使用性能。从外表上看如图1-1，轿车悬架仅是由一些杆、筒以及弹簧组成，但千万不要以为它很简单，相反轿车悬架是一个较难达到完美要求的汽车总成，这是因为悬架既要满足汽车的舒适性要求，又要满足其操纵稳定性的要求，而这两方面又是互相对立的。比如，为了取得良好的舒适性，需要大大缓冲汽车的震动，这样弹簧就要设计得软些，但弹簧软了却容易使汽车发生刹车“点头”、加速“抬头”以及左右侧倾严重的不良倾向，不利于汽车的转向，容易导致汽车操纵不稳定等。悬架最主要作用是传递作用在车轮和车身之间的一切力和力矩，比如支撑力、制动力和驱动力等，并且缓和由不