共查询到18条相似文献,搜索用时 93 毫秒
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Euro NCAP(New Car Assessment Program,欧盟新车评价规程)在2020年加入正面MPDB(Mobile Progressive Deformable Barrier,正面可变移动壁障)碰撞工况,并加入碰撞相容性评价。对MPDB碰撞工况及碰撞相容性评价规程进行了简要介绍,识别出现有某车型在MPDB工况试验后碰撞相容性的典型问题;对一种应对MPDB工况碰撞相容性同时兼顾其他典型碰撞工况的车辆前端优化设计思路与过程进行介绍说明,为其他需满足相应评价规程要求的车型提供了设计参考。 相似文献
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基于CAR to CAR正面偏置碰撞的车辆碰撞相容性探讨 总被引:2,自引:0,他引:2
在CAR TO CAR正面碰撞中,轻型车辆驾驶员相对于大型车辆具有较高的死亡率,这是由于车辆具有不同的碰撞相容性造成的。碰撞相容性的不同主要取决于车辆自身的特性,车身重量、前部刚度和外形是影响车辆碰撞相容性的重要因素。本文从理论和试验数据方面探讨碰撞相容性在CAR TO CAR 正面碰撞中所起的重要作用。 相似文献
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基于碰撞相容性因素的车辆追尾事故深入数据分析 总被引:2,自引:0,他引:2
为详细了解北京市追尾事故车辆的分类对比情况,基于车辆碰撞相容性因素构建了追尾事故的深入数据分析模型,包括追尾事故车辆的基本类型、结构形式及几何特征对比、车辆碰撞损坏特点、车内乘员伤害情况及其相关性等方面内容。利用真实交通事故案例对车辆碰撞相容性相关因素进行统计分析,为车辆追尾事故的预防与伤害减轻等项研究提供参考,指出今后研究的侧重点。 相似文献
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模拟现实交通事故中的碰撞,展开车对车偏置碰撞试验,对试验中特殊的设施、准备方法、试验控制及试验结果进行研究与分析,并对如何进一步展开两车正碰试验作了探讨。 相似文献
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车体结构正面碰撞的加速度与乘员损伤之间存在着密切的联系。根据实际的碰撞加速度曲线的特点,建立“尖顶等效方波”模型,研究尖顶等效方波的特征参数影响人体损伤响应的规律,从而指导客车正面碰撞安全性的结构优化。 相似文献
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《Vehicle System Dynamics: International Journal of Vehicle Mechanics and Mobility》2012,50(7):875-890
A rigid body model to represent a side impact crash is constructed using five degrees-of-freedom (dof) for the vehicle and three dof for each occupant in the vehicle. Nonlinear stiffness and damping elements and the presence of physical gaps between several components make the model highly nonlinear. The model is validated using experimental crash test data from a National Highway Traffic Safety Administration (NHTSA) database. To simplify the parameter identification process and reduce the number of parameters to be identified at each stage, a two-step process is adopted in which the vehicle is first assumed to be unaffected by the presence of the occupants, and its model parameters are identified. Subsequently, the parameters in the occupant models are identified.The active set method with a performance index that includes both the L2 and L∞ norms is used for parameter identification. A challenge is posed by the fact that the optimisation problem involved is non-convex. To overcome this challenge, a large set of random initial values of parameter estimates is generated and the optimisation method is applied with all these initial conditions. The values of parameters that provide the minimal performance index from the entire set of initial conditions are then chosen as the best parameter values. The optimal parameters values thus identified are shown to significantly improve the match between the model responses and the experimentally measured sensor signals from the NHTSA crash test. 相似文献
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