欢迎访问《汽车安全与节能学报》，
汽车安全与节能学报

汽车安全与节能学报 ›› 2014, Vol. 5 ›› Issue (04): 371-377.DOI: 10.3969/j.issn.1674-8484.2014.04.010

• 汽车安全 • 上一篇    下一篇

某车型正面40% 偏置碰撞的车体结构优化

王月1，尹高纪1，周大永1,2 ，刘卫国1,2 *，孙立志1   

  1. WANG Yue1, YIN Gaoji1, ZHOU Dayong1, 2, LIU Weiguo1, 2*, SUN Lizhi1
  • 收稿日期:2014-06-24 出版日期:2014-12-25 发布日期:2014-12-29
  • 作者简介:王月（1984 －），女（汉），辽宁，工程师。E-mail: wangyue0351106@163.com
  • 基金资助:

    浙江省汽车安全技术研究重点实验室建设项目（2009E10013）

Car-body structure optimization of front 40% offset impact on a vehicle

WANG Yue, YIN Gaoji, ZHOU Dayong, LIU Weiguo, SUN Lizhi   

  1. 1. Geely Automobile Institute; Xiaoshan, Hangzhou 311228, China;
    2. Zhejiang Key Laboratory of Automobile Safety Technology, Hangzhou 311228, China
  • Received:2014-06-24 Online:2014-12-25 Published:2014-12-29

PDF

1205

摘要：

某车型在64 km/h 正面40% 偏置碰撞试验中，出现踏板和转向管柱的侵入量超标问题。其
原因是：更换动力后，前机舱变形空间减小，车体纵梁变形模式不合理，及前围板附近位置的强度较低。
为此，该文提出了优化方案：调整纵梁的材料及修改纵梁内加强板的结构，来提高纵梁总成整体结构
强度，增加加强件，来提高前围的总体强度。运用Hyperworks 及LS-DYNA 软件进行仿真分析。结
果表明：优化后，改善了纵梁的变形模式，前围板侵入量减小了42 mm ；乘员的伤害也得到改善，整
体得分提高1 分。因此，该优化方案合理，车身结构的加强对乘员起到很好的保护作用。

关键词: 汽车安全\正面碰撞, 纵梁, 前围板, 车体结构优化

Abstract:

The reasons were analyzed why steering column deformation and pedal deformation exceeded
the standard values in 64km/h positive 40% offset impact. It is because the available space decreases after
changing powertrain, with unreasonable vehicle rail deformation mode and low vehicle cowl strength. An
optimization scheme was proposed including changing the rail material and modifying the strengthening plate
structure of the rail inner to improve the rail assemble strength with strengthening plates added to raise the
cowl strength. Hyperworks and LA-DYNA soft wares were used for simulation analysis. The results show that
the optimization improves the deformation mode, decreases the cowl invasion by about 42mm, and decreases
passenger injuries with the total point increasing by one. Therefore, the structure strengthens occupants'
protection. The results show the reasonability of the optimization scheme.

Key words: automotive safety, frontal crash, vehicle rail, vehicle cowl, vehicle structure optimization