车辆摆振分析中的轮胎动力学模型效应

发布时间：2021-08-15 23:49

　　摆振是一种自激振动,可以发生在例如飞机起落架、汽车、摩托车、拖车、超市手推车等各种轮式机械结构上。车辆摆振,表现为前轮绕主销的持续性振动,它不仅会增加轮胎磨损、影响车辆的操纵性,还可能导致进一步的稳定性问题、甚至引发危险。摆振发生的原因可以归结为两点:轮胎和路面接触的动力学特性、以及系统的整体结构,而轮胎模型的选择在研究过程中就显得尤为重要——这是其一。对车辆摆振的研究,一般考虑汽车前轮、转向系统、以及悬架的影响;从早期的线性模型逐渐过渡到后来的考虑轮胎弹性、转向系间隙、或干摩擦等非线性因素的模型;研究重心则主要集中在建立不同机构的物理和数学模型（或多体动力学模型）、考察系统各个参数或非线性因素对摆振的影响、以及摆振的控制和减振器（主动和被动）的使用。当然,也有文献着眼于汽车-拖车组合的摆振,但由于建模中未考虑汽车转向系,仍可归类于拖车摆振的拓展研究。随着电动汽车的推广,尤其是对于轮毂电机（或轮边电机）四轮独立驱动的电动汽车,则引出了新的问题:这种新的汽车构造,比如轮毂电机的引入导致的簧下质量增大对摆振有什么影响?由于四轮独立驱动电动汽车结构的灵活性、电机响应的快速性,相关的大量研究都... 

【文章来源】：东南大学江苏省 211工程院校 985工程院校 教育部直属院校

【文章页数】：111 页

【学位级别】：博士

【文章目录】：
摘要
Abstract
Chapter 1 Introduction
Chapter 2 Tyre models to be used
    2.1 Assumptions of the lateral tyre deformation
    2.2 Estimation and comparison of the lateral tyre force
Chapter 3 3 Do F vehicle shimmy model with dependent suspension
    3.1 System modelling
        3.1.1 Kinetic energy
        3.1.2 Potential energy
        3.1.3 Dissipative potential energy
        3.1.4 Equations of motion
    3.2 Tyre models and the constraint equations
        3.2.1 Pacejka's Magic Formula
            Brush-type tyre
            Stretched string-type tyre
        3.2.2 The Delayed Tyre Model
            Brush-type tyre
            Stretched string-type tyre
    3.3 Stability analysis
        3.3.1 Numerical methods to be used in the stability analysis
            Multi-Dimensional Bisection Method
            Pseudospectral τ Method
        3.3.2 Brush-type tyre
        3.3.3 Stretched String-type tyre
    3.4 Numerical simulations
        3.4.1 Simulations using Pacjeka's Magic Formula
        3.4.2 Simulations using the Delayed Tyre Model
    3.5 Summary
Chapter 4 5 Do F vehicle shimmy model with independent suspensions
    4.1 System modelling
    4.2 Tyre models and constraint equations
        4.2.1 Pacejka's Magic Formula
            Brush-type tyre
            Stretched string-type tyre
        4.2.2 The Delayed Tyre Model
            Brush-type tyre
            Stretched string-type tyre
    4.3 Stability analysis
        4.3.1 Brush-type tyre
        4.3.2 Stretched string-type tyre
    4.4 Numerical simulation
    4.5 Influence of vehicle parameters on shimmy
    4.6 Comparisons to the 3 Do F model
    4.7 Summary
Chapter 5 Energy Distribution Method
    5.1 Motivation
    5.2 Applications
        5.2.1 3 Do F model
        5.2.2 5 Do F model
    5.3 Summary
Chapter 6 Conclusions
Acknowledgements
Bibliography
Appendix A Matrix rotations and transformations
    A.1 Velocity and angular velocity of the wheel w.r.t. its c.g. in a coordinatesystem attached to the wheel and its kingpin
    A.2 Position of the tyre contact center
研究生发表论文清单
发明专利


【参考文献】：
期刊论文
[1]车辆动力学中的摆振问题研究现状综述[J]. 张宁,殷国栋,陈南,弥甜,李鹏程.  机械工程学报. 2017(14)
[2]高速行驶时汽车方向盘摆振的控制[J]. 张永利,许翔,吴云.  噪声与振动控制. 2011(02)
[3]基于磁流变阻尼器的起落架摆振半主动控制[J]. 陈大伟,顾宏斌,吴东苏.  中国机械工程. 2010(12)
[4]基于遗传算法的一类越野车前轮摆振控制优化设计[J]. 车华军,陈南,殷国栋.  中国机械工程. 2006(24)



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