在人体模型中优化胸部屈曲定义:对行人伤害评估的影响
Guojie Wang1, Yongcheng Long1, Bing Zhang1
1China Automotive Engineering Research Institute Co., Ltd., Chongqing, 401122, China.
Chinese journal of traumatology = Zhonghua chuang shang za zhi
|February 5, 2026
概括
这项研究优化了人体模型 (HBM) 中的胸部偏移测量,以更好地预测行人胸部损伤. 一个新的PC_deflection指数有效地预测了车辆与行人碰撞中的受伤风险.
科学领域:
- 生物力学 生物力学
- 交通安全工程 交通安全工程
- 计算机建模 计算建模
背景情况:
- 在全球范围内,行人胸部受伤是交通事故死亡的主要原因.
- 人体模型 (HBM) 使用基于菌株的方法,但基于偏移的指标对于验证生物真实性至关重要.
- 准确的胸部伤害评估在HBMs车辆与行人碰撞是一个关键的研究挑战.
研究的目的:
- 找出最佳的方法来定义HBMs的胸部偏移.
- 为了提高车辆与行人碰撞的伤害评估准确性.
- 提高使用HBMs的行人胸部伤害的预测.
主要方法:
- 进行了120次与不同车辆前部,撞击角度,速度和行人姿势的模拟.
- 使用了 THUMS v4.02 模型并测试了 4 种胸部偏移测量方法.
- 采用基于应变和基于偏移的伤害风险功能,包括主要组件分析以进行改进.
主要成果:
- 伤害风险显示出与机盖前边高度的U形关系,最小化了约950毫米.
- 一个新的指数,PC_deflection,来自最佳的偏移方法,有效预测伤害风险.
- PC_deflection指数与肋骨骨折数 (NFR3+) 有着强烈的相关性.
结论:
- 该研究确定了一种最佳的胸部偏移测量方法,用于HBMs.
- 这种方法可以作为行人胸部损伤评估的有价值的补充指标.
- 改进的HBM精度有助于减少与交通有关的行人死亡事故.
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