小偏置碰撞评分原则解析及结构优化策略

中国汽车工程研究院与中国保险行业协会联合发布"中国保险汽车安全指数测评规程",其中小偏置碰撞尤为引人关注,如何提高车辆小偏置碰撞工况的等级评定降低保费是主机厂当前的首要任务。通过对小偏置碰撞工况的评分原则进行详细介绍和解析,并以试验结果为依据,研究得出车体结构对小偏置碰撞整体等级评定起决定作用,驾驶员在此工况下下肢受伤残风险最高。为研究应对小偏置碰撞的车体结构,以某款SUV车型仿真结果为基础,详细介绍小偏置碰撞工况下车体变形特点,同时结合理论分析,提出三类优化方案,并对其进行优缺点说明,这三类优化方案为车身设计提供导向作用。针对该车型选择第二类优化方案,车体结构等级评定由"较差"提升为"优秀"。

Analysis on Rating Principle and Structural Optimization Strategy of Small Overlap Crash

China Automotive Engineering Research Institute and China Insurance Industry association jointly issued the "China Insurance Automotive Safety Index Evaluation Rules",in which small overlap crash is particularly interesting.How to improve the rating evaluation of vehicle on the small overlap crash condition and reduce the premium is the primary task of the OEMs(Original Equipment Manufacturers) at present.Through the detailed introduction and analysis of the rating principle of small overlap crash,and based on the test results,it is concluded that car body structure plays a decisive role in the overall rating evaluation of small overlap crash,and the driver has the highest disability risk of the lower limb under this condition.In order to study the car body structure for requirement of small overlap collision,basing on the simulation results of a SUV model,and the car body deformation characteristic on small overlap crash is introduced in detail,combining with theoretical analysis,three kinds of optimization schemes are proposed,their advantages and disadvantages are explained,These three kinds of optimization schemes provide guidance for car body design.The second type of optimization scheme is selected for the SUV,and the overall body structure rating has been upgraded from "Poor" to "Good".