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对侧杆撞击碰撞中躺着乘客的安全套系统的性能分析

Julio Abajo¹, Mónica Diez¹, Alberto Negro¹

¹Vehicle Safety Department, CIDAUT Foundation (Investigación y Desarrollo en Transporte y Energía), Valladolid, Spain.

Traffic injury prevention

|March 11, 2025

概括

优化安全气囊系统以更早的碰撞前触发显著提高在侧面撞击时倾斜位置的乘客保护. 最安全的场景涉及双侧安全气囊系统,触发时间为-5毫秒,达到五星级.

科学领域:

汽车安全工程汽车安全工程
生物力学生物力学
防撞分析防撞分析

背景情况:

目前的安全扣留系统是针对标准直立姿势进行优化.
法律和评级测试没有充分评估躺卧姿势的保护.
斜杆侧冲击对处于非标准位置的乘客构成重大风险.

研究的目的:

评估不同安全气囊系统在斜杆侧冲击条件下对躺卧乘客的有效性.
分析不同发火时间策略对乘客安全的影响.
提出优化的安全套系统,以提高卧卧姿势的保护.

主要方法:

使用经过验证的车辆子系统模型进行有限元 (FE) 模拟.
在欧元NCAP斜杆侧冲击条件下对躺着的乘客 (WorldSID第50名男性人形) 的分析.
评估三种安装在座椅上的侧系统和三种射击时间策略 (常规和两种碰撞前).

主要成果:

传统的安全气囊激活时间导致坐卧姿势中乘客受伤值更高.
提前启动气囊部署的时间减少了测量的伤害值.
双侧安全气囊系统 (头部+胸部-骨盆) 具有碰撞前触发 (-5ms) 证明了最高的安全评级 (五星).

结论:

优化的侧气囊系统,结合早期触发,可以在斜杆侧撞击中为躺着的乘客提供足够的保护 (4-5星).
气囊充气的时间是坐卧位置上乘客安全的关键因素.
该研究强调在车辆安全测试和系统设计中需要考虑不同乘客姿势.

关键词:

气囊是一种安全气囊.有限元素建模有限元素建模被动安全是一种被动的安全.事故发生前的情况.倾斜的位置倾斜的位置.侧冲击影响侧冲击.

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