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一种用于自动模拟各种车辆碰撞的新方法,以估计碰撞严重程度
Pascal Breitlauch1, Christian T Erbsmehl1, Michiel van Ratingen2
1Fraunhofer-Institute for Transportation and Infrastructure Systems IVI, Dresden, Germany.
Traffic injury prevention
|June 2, 2023
概括
一种新方法可以快速准确地模拟车辆碰撞,计算能量等效速度 (EES) 和delta-v.等关键参数. 该工具有助于评估安全系统和伤害风险,而不需要复杂的硬件.
科学领域:
- 汽车工程 汽车工程
- 防撞性和安全性和安全性.
- 计算力学 计算力学 计算力学
背景情况:
- 碰撞严重性参数,如能量等效速度 (EES) 和delta-v,对于伤害预测和主动安全系统评估至关重要.
- 现有的模拟方法可能是耗时和计算密集的.
研究的目的:
- 开发一种新的,时间效率高的方法来模拟车辆碰撞.
- 为了准确计算各种碰撞场景的碰撞严重度参数 (EES,delta-v).
- 为了实现对主动安全系统和伤害减轻的虚拟评估.
主要方法:
- 利用预先开发的3D EES模型来计算2D车辆替代模型.
- 采用一种基于机械冲击原理和车辆动力学的新,时间离散的方法.
- 开发了一个独立的工具, impactEES,用于自动计算碰撞严重性参数.
- 与欧洲新车评估计划 (Euro NCAP) 和ADAC碰撞测试数据相比验证了结果.
主要成果:
- 冲击EES工具可以自动计算汽车对汽车和汽车对物体的碰撞.
- 输出包括变形区域,EES,delta-v,以及详细的时间离散车辆动态 (加速,速度,位置,方向).
- 模拟很快,在标准硬件上,单个两辆车的碰撞在几秒钟内被计算出来.
- 验证显示EES (-2.0% ± 8.4%) 和delta-v (-1.2% ± 14.2%) 的平均百分比错误很低.
结论:
- 这种新的二维计算方法准确地模拟了各种车辆碰撞.
- 该工具有助于虚拟评估主动安全系统的伤害减轻能力.
- 这种方法对有针对性的发展车辆安全技术做出了重大贡献.
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