某SUV汽车多连杆后独立悬架设计与分析

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GLK300SUV的后悬架系统的设计，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；CATIA

A SUV multi-link independent rear suspension of automobile

design and analysis

Abstract

In recent years, with the rapid development of automobile industry, people on the handling stability and riding comfort of the increasingly high demand, so the car's 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, 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 continues 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 effect of forming in the same stand head and shoulders above others don't 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 Mercedes-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 software 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, 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 performance. Therefore, the design of the suspension system has a broad development prospects.

Keywords：Connecting rod；independent suspension ；Simulation optimization；CATIA