IIHS+小偏置碰撞位移导向策略与结构评估方法

2024年1月17日发(作者：宝马x5插电混动)

ISSN 1674-8484CN 11-5904/U汽车安全与节能学报, 2013年, 第4卷 第4期J Automotive Safety and Energy, 2013, Vol. 4 No. 404/12322 — 333IIHS小偏置碰撞位移导向策略与结构评估方法肖?锋1，陈晓锋2（1. 武汉上善仿真科技有限责任公司，武汉 430060，中国；2. 奇瑞汽车股份有限公司，芜湖 241006，中国），汽车主机厂(OEMs)普摘 要：

在美国公路安全保险协会(IIHS)公布的3批小偏置碰撞测试结果中遍得分较低。该文利用IIHS小偏置碰撞的数学模型分析得出：侧向残余位移与侧向速度、纵向碰撞载荷与纵向速度存在正相关性，解释了测试试验现象。提出了基于轻量化设计的侧向位移导向策略，易于实施且效果得到了试验验证。提出了基于碰撞载荷组合工况的结构评估方法，以此预估开发车型的小偏置碰撞结构安全性能。因此，“笼式安全车身(safety cage)”不是应对IIHS小偏置碰撞的必要条件，其测试难度被高估，且其对车辆被动安全设计的区分作用将难以持久。小偏置碰撞；数学模型；轻量化设计；位移导向策略；结构评估方法；笼式安全车身

关键词：

汽车安全； U 461.91

文献标志码： A

DOI： 10.3969/.1674-8484.2013.04.004中图分类号：One displacement oriented strategy and a structural

assessment method for IIHS new small overlap crash tests

XIAO Feng1, CHEN Xiaofeng2

（1.

Wuhan ShangShan Simulation Technology Co., Ltd, Wuhan 430060, China;2.

Chery Automobile Co., Ltd, Wuhu 241006, China）Abstract: Vehicle OEMs (Original Equipment Manufacturers) generally gain poor scores in the results of

three batch-tests released by the Insurance Institute for Highway Safety (IIHS) for small overlap impact. A

mathematical model was built for the IIHS new small overlap crash test. An analysis from the mode reveals that

there are positive correlations between the lateral residual displacements and the lateral speeds, and between

the vertical collision loads and the vertical speeds, and then, the test phenomenon were reasonably explained. A

lateral displacement oriented strategy was established for light-mass design. The strategy is easy to implement

and verified by experiments. A structural assessment method was proposed for collision load combination

conditions to estimate the structure safety performances for developing vehicles. Therefore, a \"safety cage\"

is not a necessary condition to deal the IIHS new small overlap crash tests, their response difficulties are

overestimated, and it will be not durable to distinguish passive safety design.

Key words: vehicle safety; small overlap impact; mathematical model; light-mass design; displacement

oriented strategy; structural assessment method; safety cage收稿日期/ Received： 2013-06-20第一作者 / First author： 肖锋（1980—），男（汉），湖南，工程师。E-mail: feixin5214@

肖 锋，等：IIHS小偏置碰撞位移导向策略与结构评估方法美国公路安全保险协会 (Insurance Institute for

Highway Safety，IIHS) 在其新车碰撞安全评价规程

(New Car Assessment Program，NCAP) 中率先推出了应对小偏置碰撞交通事故形式的25%小偏置碰测试 (IIHS New Small Overlap Crash Test)，具有风向标意义和重要的工程指导价值，并先后公布了3批测试结果 (本文所涉及的IIHS测试结果均来自IIHS官方网站/iihs/ratings的查询结果)。在IIHS小偏置碰撞被动安全性能测试中，主机厂(original

equipment manufacturers，OEMs)普遍表现比较糟糕。从短期来看，IIHS小偏置碰起到了对主机厂被动安全设计水平的区分作用，被普遍认为是最严苛的被动安全测试；但从长期来看，IIHS小偏置碰测试对车辆被动安全设计的区分作用将难以持久性，其测试难度被高估。1