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车辆纵向非光滑多体动力学建模与数值算法研究

范新秀 王琪

范新秀, 王琪. 车辆纵向非光滑多体动力学建模与数值算法研究[J]. 力学学报, 2015, 47(2): 301-309. doi: 10.6052/0459-1879-14-323
引用本文: 范新秀, 王琪. 车辆纵向非光滑多体动力学建模与数值算法研究[J]. 力学学报, 2015, 47(2): 301-309. doi: 10.6052/0459-1879-14-323
Fan Xinxiu, Wang Qi. RESEARCH ON MODELING AND SIMULATION OF LONGITUDINAL VEHICLE DYNAMICS BASED ON NON-SMOOTH DYNAMICS OF MULTIBODY SYSTEMS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(2): 301-309. doi: 10.6052/0459-1879-14-323
Citation: Fan Xinxiu, Wang Qi. RESEARCH ON MODELING AND SIMULATION OF LONGITUDINAL VEHICLE DYNAMICS BASED ON NON-SMOOTH DYNAMICS OF MULTIBODY SYSTEMS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(2): 301-309. doi: 10.6052/0459-1879-14-323

车辆纵向非光滑多体动力学建模与数值算法研究

doi: 10.6052/0459-1879-14-323
基金项目: 国家自然科学基金资助项目(11372018).
详细信息
    通讯作者:

    范新秀,博士生,主要研究方向:非光滑多体系统动力学的建模与数值计算方法.E-mail:fanxxbuaa@163.com

  • 中图分类号: O313;U461.1

RESEARCH ON MODELING AND SIMULATION OF LONGITUDINAL VEHICLE DYNAMICS BASED ON NON-SMOOTH DYNAMICS OF MULTIBODY SYSTEMS

Funds: The project was supported by the National Natural Science Foundation of China (11372018)
  • 摘要: 在建立车辆纵向多体系统的动力学模型中, 将车身与车轮视为刚体, 两者通过减振器链接; 将传动系统视为一个圆盘通过扭簧和阻尼器与驱动轮连接; 将车轮与路面间的接触力简化为法向约束力、摩擦力和滚阻力偶,其中摩擦力的模型采用库仑干摩擦模型. 采用笛卡尔坐标作为该系统的广义坐标用于描述该系统的位形, 给出系统单双边的约束方程, 应用第一类拉格朗日方法建立了系统的动力学方程. 由于摩擦与滚阻的非光滑性, 使得该系统动力学方程不连续. 为便于计算, 建立了车轮与路面接触点的相对切向加速度与摩擦力余量的互补条件、车轮角加速度与滚阻力偶余量的互补条件, 以及车轮轮心法向加速度与路面法向约束力的互补条件. 将接触—分离、黏滞—滑移的判断问题转化成线性互补问题的求解, 并给出了具有约束稳定化的基于事件驱动法的数值计算方法. 最后, 应用该方法对车辆纵向多体系统进行了仿真, 分析了输出扭矩、摩擦及滚阻系数对其动力学行为的影响.

     

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出版历程
  • 收稿日期:  2014-10-22
  • 修回日期:  2014-11-28
  • 刊出日期:  2015-03-18

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