某型轻卡自激摆振多极限环特性研究  

Study of the Effects upon Vehicle Stability Exerted by Tie Rod End Clearances under Slalom Maneuver

作　　者：张志龙[1] 潘宁[1] 陈长鹤 肖怀阳[2] 魏道高[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]浙江吉利汽车研究院有限公司,杭州310052

出　　处：《汽车科技》2015年第4期1-6,共6页Auto Sci-Tech

基　　金：国家自然科学基金项目(51375130);吉利汽车研究院浙江省汽车安全技术重点实验室开放基金项目(2009E10013)

摘　　要：汽车摆振与初始激励相关,足够大的初始激励才能激发大幅自激摆振即多极限环现象。为进一步研究汽车自激摆振多极限环现象,选用某型轻卡商用车作为样车,将悬架及转向系统干摩擦简化至主销处,选用迟滞环摩擦模型建立了整车十自由度摆振模型。运用数值方法,分析干摩擦力矩对摆振极限环的影响。结果表明,干摩擦幅值增加会使汽车摆振车速区间和摆振幅值减小,导致中间过渡单环区间消失。分析结果旨在为抑制该类型汽车振动提供理论参考。The shimmy of vehicle is related with initial excitation. Intense external excitations may present sharp fluctuation as multiple limit cycles responses. In order to research on multiple limit cycles, a light truck shimmy model including hysteresis loop friction is established and numerical calculation is performed to study the influence of dry friction on limit cycles. The results show that when increase the dry friction torque, both the shimmy range and vibration amplitude are gradually reduced. This analysis results may provide theoretical reference to automobile vibration study.

关 键 词：转向轮摆振 干摩擦 多极限环 整车振动 

分 类 号：U464.21[机械工程—车辆工程]