东南大学学报（自然科学版）2017，Vol.47Issue(2)：247-253,7.DOI:10.3969/j.issn.1001-0505.2017.02.009
悬架减震器非线性特性对汽车拖车组合系统稳定性的影响
Effects of nonlinear characteristics of suspension dampers on stability of car-trailer combinations
摘要
Abstract
To investigate effect on a time-varying harmonic dynamic axle load induced by the change of nonlinear characteristics on suspension dampers installed in the towing car on the dynamic stability of car-trailer combinations,a linear single-track model with a tandem-axle trailer was proposed and an effective axle load was used to quantify the harmonic dynamic axle load.A parameter identification method based on time-frequency analysis was applied in the process,too.Experimental study shows the harmonic effect has a time-varying phenomenon.A simulation method is designed for the purpose of a harmonic force generator to simulate the harmonic effect in road experiments.On this basis,the sensitivity analysis of the influence on the harmonic amplitude or the phase on the system dynamic stability is performed by the simulation.It is preliminarily proved that the proposed theoretical analysis of the harmonic dynamic axle load on the stability effects of car-trailer combinations is reasonable and acceptable.关键词
车辆动力学/汽车拖车组合系统/非线性特性/时变谐波效应/动态稳定性Key words
vehicle dynamics/car-trailer combinations/nonlinear characteristics/time-varying harmonic effect/dynamic stability分类
交通工程引用本文复制引用
张宁,琚安建,李鹏程,殷国栋..悬架减震器非线性特性对汽车拖车组合系统稳定性的影响[J].东南大学学报（自然科学版）,2017,47(2):247-253,7.基金项目
国家自然科学基金青年基金资助项目(51605087)、江苏省自然科学基金青年基金资助项目(BK20160671). （51605087）
