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汽车安全与节能学报

汽车安全与节能学报 ›› 2012, Vol. 3 ›› Issue (4): 339-346.DOI: 10.3969/j.issn.1674-8484.2012.04.007

• 汽车安全 • 上一篇    下一篇

正面小重叠碰撞工况模拟研究与实车优化分析

刘珍海，乔磊磊，岳国辉，陈现岭*，张 凯   

  1. 长城汽车股份有限公司技术中心 河北省汽车工程技术研究中心，保定 071000，中国
  • 收稿日期:2012-10-19 出版日期:2012-12-25 发布日期:2013-01-05
  • 通讯作者: 陈现岭，高级工程师，院长。E-mail ：cyaqgc@gwm.cn
  • 作者简介:刘珍海（1985 －），男（满），河北，工程师。E-mail: mecl2005@163.com, cyaqgc@gwm.cn

Simulation research and optimal analysis for small overlap frontal crashworthiness of a real car

LIU zhenhai, QIAO leilei, YUE guohui, CHEN xianling*   

  1. R&D Center of Great Wall Motor Company, Automotive Engineering Technical Center of HebeiProvince,
    Baoding071000, China
  • Received:2012-10-19 Online:2012-12-25 Published:2013-01-05

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摘要： 美国高速公路安全保险协会( Insurance Institute for Highway Safety, IIHS) 2012 年颁
布的正面小重叠碰撞试验方法及评价规程，对进军美国市场的中国车企提出了挑战。本文根据IIHS
协会的试验方法及评价规程，用相关性分析后的有限元模型，对某实车进行了正面小重叠碰撞仿真
分析。试验中，汽车以64.4 km/h 的速度撞击刚性壁障，重叠率为25 %。试验后对碰撞车的车体结构、
约束系统/ 假人运动学、假人伤害测量三方面进行评价，加权得到正面小重叠碰撞工况的总等级。分
析结果为：车体结构得到“边缘”的评级；针对初始结果，从车体结构和材料两方面进行优化，优化
后车体结构评级为“良好”。提出结构耐撞性能、约束系统集成方面的建议，为后续车辆安全性能开
发提供参考。

关键词: 车辆安全性, 小重叠正碰, 车体结构评价, 约束系统, 假人, 伤害值

Abstract: A crash-test protocol and rating guidelines for small-overlap frontal-crashworthiness, which
was released by the Insurance Institute for Highway Safety (IIHS) in August 2012, is a challenge to China’s
enterprises intending to enter the US automotive market. Small-overlap frontal barrier crash tests on a real
vehicle in the authors' company were simulated and analyzed using the correlated FE model according to the
protocol and guidelines. The tests were conducted at 64.4 km/h and 25% overlap, with rating based on vehicle
structures, restraints and dummy kinematics, and dummy injury measures, and with the overall rating obtained
by weighting of each individual rating. The original results indicate that the structure rating is “Marginal”. After
optimizing the structure and material according to the original results, the structure obtains “Good” rating. Some
strategies for structure crashworthiness and restraints are summarized to offer references for new car safety.

Key words: car safety, small overlap frontal crashworthiness, vehicle structural rating, restraint, dummy, injury

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