摘要
悬架是保证车轮或车桥与汽车承载系统之间具有弹性联系并能传递载荷、缓和冲击、衰减振动以及调节汽车行驶中的车身位置等有关装置的总称。悬架最主要的功能是传递作用在车轮和车架之间的一切力和力矩，并缓和汽车行驶过不平路面时所产生的冲击，衰减由此引起的承载系统的振动，以保证汽车行驶的平顺性。
本文根据给定参数，参考依维柯欧霸轻卡车型，介绍了悬架系统领域的研究与设计及其发展现状和趋势；概述了悬架系统对汽车平顺性和操纵稳定性的影响；根据钢板弹簧悬架设计的详细步骤和设计要求，各主要零部件结构的选型及计算；板簧弧高及曲率半径的计算，材料强度、刚度的验算、校核及减振器的选取。
关键词：轻型载货汽车，后悬架，钢板弹簧悬架，减震器

ABSTRACT
Suspension involves some related components, which exist to guarantee elastic contact between wheels or axle and the carrying system. It also has a great contribution in transferring the load, cushioning the impact, attenuating vibration, and regulating the position of the body of the running car. Apart from the transformation of force and moment between wheels and frame, it helps cushion the impact when uneven road surface is encountered, undermine the following vibration of carrying system, as a result, provide a great possibility of smoothly running.
This paper firstly introduces the suspension system research and design and development status quo and tendency; Secondly detailed overview of the suspension system and manipulation stability comfort ability influences;  Introduces emphatically the leaf spring again suspension design processes of the ship unlades and design requirements, the structure of the main parts selection and calculation,  leaf-spring curvature, material strength, stiffness checking and checking, shock absorber selection and installation Angle calculation.
KEY WORDS：Light truck, rear suspension, leaf spring suspension, shock absorber
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