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首页> 外文期刊>International journal of numerical methods for heat & fluid flow >Coupled analysis of vehicle stability in crosswind on low adhesion road
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Coupled analysis of vehicle stability in crosswind on low adhesion road

机译：低附着力道路侧风下车辆稳定性的耦合分析

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摘要

Purpose - The purpose of this paper is to develop a two-way coupling approach for investigating the aerodynamic stability of vehicles under the combined effect of crosswind and road adhesion. Design/methodology/approach - The author develops a new two-way coupling approach, which couples large eddy simulation with multi-body dynamics (MBD), to investigate the crosswind stability on three different adhesion roads: ideal road, dry road and wet road. The comparison of the results obtained using the traditional one-way coupling approach and the new two-way coupling approach is also done to assess the necessity to use the proposed coupling technique on low adhesion roads, and the combined effect of crosswind and road adhesion on vehicle stability is analyzed. Findings - The results suggest that the lower the road adhesion is, the larger deviation a vehicle generates, the more necessary to conduct the two-way coupling simulation. The combined effect of the crosswind and road adhesion can decrease a vehicle's lateral morion on a high adhesion road after the disappearing of the crosswind. But on a low adhesion road, the vehicle tends to be unstable for its large head wind angle. The vehicle stability in crosswind on a low adhesion road needs more attention, and the investigation should consider the coupling of aerodynamics and vehicle dynamics and the combined effect of crosswind and road adhesion. Originality/value - Developing a new two-way coupling approach which can capture the complex vehicle structures and the road adhesion with MBD model and the completed fluid filed structure with CFD model. The present study might be the first study considering the coupling of crosswind and low adhesion road. The proposed two-way coupling approach will be useful for researchers who study vehicle crosswind stability.
机译：目的-本文的目的是开发一种双向耦合方法，以研究侧风和路面附着力共同作用下车辆的空气动力学稳定性。设计/方法/方法-作者开发了一种新的双向耦合方法，该方法将大型涡流模拟与多体动力学（MBD）耦合在一起，以研究在三种不同的粘合道路上的侧风稳定性：理想道路，干燥道路和潮湿道路。还比较了使用传统的单向耦合方法和新的双向耦合方法获得的结果，以评估在低附着力道路上使用建议的耦合技术的必要性，以及侧风和道路附着力对路面的综合影响车辆稳定性分析。结果-结果表明，道路附着力越低，车辆产生的偏差越大，则进行双向耦合仿真的必要性就越高。侧风和路面附着力的共同作用可以减少侧风消失后在高附着力道路上车辆的横向变形。但是在低附着力的道路上，车辆由于大头风角而趋于不稳定。低附着力道路上的侧风中的车辆稳定性需要引起更多关注，研究应考虑空气动力学和车辆动力学的耦合以及侧风和道路附着力的综合影响。原创性/价值-开发一种新的双向耦合方法，可以使用MBD模型捕获复杂的车辆结构和道路附着力，并使用CFD模型捕获完整的流体场结构。本研究可能是考虑侧风和低附着力道路耦合的第一项研究。拟议的双向耦合方法将对研究车辆侧风稳定性的研究人员有用。

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  • 作者

    Shuya Li; Zhengqi Gu; Taiming Huang; Zhen Chen; Jun Liu;

  • 作者单位

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, China;

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, China,Hunan Province Cooperative Innovation Center for The Construction and Development of Dongting Lake Ecological Economic Zone, Hunan University of Arts and Science, Changde, China;

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, China,Hunan Institute of Science and Technology, Yueyang, China;

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, China;

    State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Crosswind stability; Multi-body dynamics; Road adhesion; Two-way coupling;

    机译：侧风稳定性;多体动力学;道路附着力;双向耦合;

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