麦弗逊悬架刚度对汽车稳态转向特性的影响  

Effect of Stiffness of McPherson Suspension on Stable Steering Characteristic

作　　者：褚志刚[1] 邓兆祥[1] 胡玉梅[1] 朱明[1] 李伟 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044 [2]重庆长安有限责任公司汽车技术中心,重庆400023

出　　处：《重庆大学学报（自然科学版）》2003年第8期10-13,共4页Journal of Chongqing University

摘　　要：以多体系统动力学理论为基础,以某微型汽车为工程实例,建立了包含车架、转向系、前后悬架和差速器5大总成的某麦弗逊前悬架汽车稳态转向特性整车动力学分析模型,研究了螺旋弹簧刚度和横向稳定杆直径等悬架刚度参数对汽车稳态转向特性的影响规律。分析结果表明,增加前螺旋弹簧刚度和横向稳定杆直径能明显提高该车的稳态转向特性,但稳态转向特性得分值增量却逐渐下降。因此,合理选择前悬架刚度参数是提高麦弗逊前悬架汽车稳态转向特性的有效途径。Based on the theory of multibody dynamics, this paper takes one kind of mini-car whose front suspensions are McPherson independent suspension as example, and establishes the MD analysis model of whole vehicle including frame body, steering system, front suspension, rear suspension and differential gear. Moreover, this paper studies the effect on the stable steering characteristic by the stiffness of McPherson Suspension depending on the stiffness of screw spring and the diameter of lateral stable pole. The result shows that the stable steering characteristic can be improved greatly by increasing the stiffness of screw spring and the diameter of lateral stable pole, but the scoring increment of the stable steering characteristic may decline gradually. Therefore, it's one effective measure of improving stable steering characteristic of vehicle with McPherson front Suspension by reasonably choosing stiffness of front suspension.

关 键 词：多体动力学 稳态转向特性 汽车系统动力学 麦弗逊悬架 

分 类 号：U461.6[机械工程—车辆工程] U463.33[交通运输工程—载运工具运用工程]