摘要
为了研究轮胎模型对轮胎包络特性的描述,介绍了该模型的建模方法和参数推导方法 ,并将其整合于1/4车辆中,利用Matlab/Simulink进行建模仿真。通过与点接触模型在随机路面激励下的对比,从时域和功率谱密度入手分析模型响应。仿真结果证实了离散的径向弹簧结构对于路面激励高频成分的过滤效果明显优于点接触模型,同时也提出并验证了该模型具有一个与周向离散精度相关的结构频率。径向弹簧轮胎模型能够更好地描述轮胎包络特性,在车辆振动和行驶平顺性研究领域有较好的应用前景。
In order to study the enveloping behavior described by tire models, the modeling approach and specific parameters of radial spring tire model are introduced. Further integrated in quarter-car and compared with point contact model, the radial spring model is analyzed under stochastic road excitation in both time domain and frequency domain （Power Spectral Density）. Result shows that the radially discretized structure can effectively filter the high-frequency component from road and perform a better simulation. Meanwhile a structural frequency related to discretization number is proposed and further verified. Radial spring tire model can describe the enveloping behavior better and have a positive prospect in study of vehicle vibration and riding comfort.
出处
《农业装备与车辆工程》
2014年第12期33-37,共5页
Agricultural Equipment & Vehicle Engineering
关键词
轮胎
径向弹簧模型
随机路面激励
功率谱密度
tire
radial spring tire model
stochastic road excitation
power spectral density
