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汽车安全与节能学报

汽车安全与节能学报 ›› 2013, Vol. 4 ›› Issue (3): 228-231.DOI: 10.3969/j.issn.1674-8484.2013.03.005

• 汽车安全 • 上一篇    下一篇

车身加速度预测及其在斜角碰撞台车试验中的应用

刘志新1，张 越2，娄 磊1，陈 超1   

  1. 1. 中国汽车技术研究中心，天津 300300，中国；2. 河北工业大学 机械工程学院，天津 300401，中国
  • 收稿日期:2013-07-24 出版日期:2013-09-25 发布日期:2013-06-27
  • 作者简介:刘志新(1975—)，男( 汉)，天津，高级工程师

Prediction on vehicle acceleration and its application in frontal angular impact sled tests

LIU Zhixin1, ZHANG Yue2, LOU Lei1, CHEN Chao1   

  1. 1. China Automobile Technology & Research Center, Tianjin 300300, China;2. College of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, China
  • Received:2013-07-24 Online:2013-09-25 Published:2013-06-27

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摘要： 用于模拟正面全宽碰撞的台车试验中，车身纵轴通常平行于台车运动方向；因而无法模拟在
斜角碰撞中乘员因车辆发生旋转受到的影响。本文通过对汽车斜角碰撞模型的简化，并进行动力学
分析，结合实车碰撞试验中车身加速度，得到一种能够计算车身不同位置加速度矢量的方法，从而
能够精确地确定模拟斜角碰撞的车身摆放角度以及台车碰撞脉冲的选取。对比试验的结果表明：无论
是假人头部伤害还是胸部伤害，改进的台车试验方法与实车碰撞试验的相关性均有较大幅度的提高。

关键词: 汽车工程, 被动安全, 正面斜角碰撞, 偏转角度, 台车输入脉冲, 假人伤害

Abstract: Vehicle body longitudinal axis at sled tests, which have been widely used to simulate the full-width
frontal impact at present, isusually parallel to sled movement direction. Therefore, occupants' motion attitude
cannot be simulated due to vehicle rotary motionin angular impact test. This paper simplifies the vehicle angular
impact,analyzes kinetic model. A new method was used to accurately determine the deflection angle of the
vehicle body and the input pulse of the sled in angular impact sled test to calculate the acceleration vectors in
vehicle body by combining with the vehicle acceleration signals of the real vehicle crash test. By comparing the
head injuries and chest injuries, the results show that improved sled test method has better simulation accuracy
than the existing sled test method.

Key words: automotive engineering, passive safety, frontal angular impact, deflection angle, input pulse, dummy injuries

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