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汽车安全与节能学报

JASE ›› 2020, Vol. 11 ›› Issue (1): 79-85.DOI: 10.3969/j.issn.1674-8484.2020.01.008

• 汽车安全 • 上一篇    下一篇

两辆 SUV 乘用车侧碰耐撞性最差工况的判定

吴玉宝，牛卫中 *，雷云涛#br#   

  1. （兰州交通大学 机电工程学院，兰州 730070，中国）
  • 收稿日期:2019-07-29 出版日期:2020-03-31 发布日期:2020-04-01
  • 通讯作者: 牛卫中 (1962—)，男( 汉)，甘肃，教授。Email: nwz@mail.lzjtu.cn。
  • 作者简介:第一作者 / First author：吴玉宝(1993—)，男( 汉)，安徽，硕士研究生。Email: 1451732377@qq.com。

Judgement of the worst condition of the crashworthiness in a front-to-side collision of two SUVs

WU Yubao，NIU Weizhong*，LEI Yuntao   

  1.  (School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China)
  • Received:2019-07-29 Online:2020-03-31 Published:2020-04-01

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摘要： 为了判定运动型多功能乘用车（SUV）受到同款车型以确定速度侧面碰撞时驾驶位附近车体 耐撞性最差的工况，参考 2018 版中国新车评价规程（C-NCAP）中的相关要求，联合 HyperWorks 和 LS-DYNA 软件建立了两辆某款福特 SUV侧面碰撞的有限元模型，仿真计算了撞击车在 50 km/h的 速度下以 4种角度碰撞静止车辆侧面6 个位置时被撞车驾驶位附近车体侧围构件的侵入量数据及其 分布情况。结果表明：若两辆此款 SUV发生侧碰且碰撞速度一定，则被撞车驾驶位附近车体侧围构 件在碰撞角接近 120°且碰撞位置处于法规侧碰处向前 0~200 mm 范围内的工况下所产生的侵入量最 大，即被撞 SUV驾驶位附近车体的耐撞性在这样的工况下显得最差。

关键词: 汽车安全性 , 车体耐撞性 , 车 -车侧面碰撞 , 侧围构件侵入量 , 有限元仿真

Abstract:  A finite element front-to-side collision model of two Ford SUVs was developed to determine the worst condition of the crashworthiness of an SUV body near driving seat when the car encounters a front-toside collision from another SUV of same model at a certain speed by referring to the requirements of the 2018 China New Car Assessment Program (C-NCAP) and by using HyperWorks and LS-DYNA software, and the intrusion data as well as their distributions of the side components near driving seat of rest car were calculated in simulation when the side of the car was collided at 6 positions by striking car of 50 km/h speed in 4 directions. The results show that when a front-to-side collision of two Ford SUVs happen and the colliding speed is certain, the maximum intrusions of the side components near driving seat of struck car occur in the condition that the colliding angle is near 120° and the collided position is within the range from regulation-stated site to 200 mm ahead of the site, namely the crashworthiness of struck SUV body near driving seat appears the worst in such condition.

Key words: automobile safety ,  crashworthiness of car body , front-to-side collision of two cars ,  intrusion of side component ,  finite element simulation