不同肩带力、夹紧锁舌或限力插锁对正面刚性墙碰撞中二排HIII-5F假人响应影响研究

doi:10.19562/j.chinasae.qcgc.2024.05.016

Abstract

Abstract:

Rear seat’s HIII-5F dummy score drops when the speed reaches 56 km/h in Frontal Rigid-wall Barrier （FRB） Test of C-NCAP 2024. After analyzing occupant response based on ISO model/ tests data， potential effect is specified with lower shoulder force （LSF）/ DLT/ BLL and sled test validation/ verification is conducted. Sled result indicates that LSF benefits the head/ neck/ chest a little. DLT benefits the chest a lot without side effect on the head/ neck. BLL benefits the head/ neck a lot without benefit for the chest， both with obvious benefit for the chest combined with LSF. Crash result indicates that the score is 94% for DLT+LSF， 87% for BLL+LSF and head excursion exceeding is exempted by sled test with HIII-50M.

Key words: frontal crash, rear female, C-NCAP, locking tongue, buckle load limiter

Qingbo Zhao,Xiaolong Fu,Zhiguo Wu,Xiaoqian Zhang,Shuai Han,Si Wu. Study on the Effect of Different Shoulder Belt Forces, Dynamic Locking Tongue (DLT) or Buckle Load Limiter (BLL) on the Response of Hybrid III 5F Percentile ATD in Rear Seat During Frontal Rigid-Wall Barrier Test[J].Automotive Engineering, 2024, 46(5): 906-912.

Figures/Tables 16

References 18

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指标	高/低性能限值	伤害数值
指标	高/低性能限值	56 km/h	50 km/h
头部3 ms合成减速度/g	72.00-80.00	58.30	51.10
颈部张力F_z /kN	1.70-2.62	1.95	1.61
胸部压缩量/mm	18.00-42.00	31.30	22.99

名称	参数
加速滑台	Instron碰撞模拟台车系统
加速度模拟精度	1.0g（CFC 60）
速度模拟精度	±0.5 km/h
有效载荷1 500 kg	≥70g
环境温度	20-22 ℃

指标	伤害数值
指标	实车	滑台
头部3 ms合成减速度/g	58.30	63.50
颈部张力F_z /kN	1.95	2.10
胸部压缩量/mm	31.30	29.80

项目	名称	参数
基础	4.0 kN	肩带力4.0 kN
对比	3.5 kN	肩带力3.5 kN
	DLT_4.0 kN	肩带力4.0 kN与 DLT组合
	DLT_3.5 kN	肩带力3.5 kN 与DLT组合
	BLL_4.0 kN	肩带力4.0 kN与BLL组合
	BLL_3.5 kN	肩带力3.5 kN 与BLL组合

名称	参数
试验设备	MESSRING壁障及牵引
精度	±0.2 km/h （<80 km/h）
实际速度	56.3 km/h
环境温度	20-22 ℃

Study on the Effect of Different Shoulder Belt Forces, Dynamic Locking Tongue (DLT) or Buckle Load Limiter (BLL) on the Response of Hybrid III 5F Percentile ATD in Rear Seat During Frontal Rigid-Wall Barrier Test

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Figures/Tables 16

References 18

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指标	DLT_3.5 kN	BLL_3.5 kN
头部3 ms减速度/g	56.72	50.35
颈部张力F_z /kN	1.89	1.63
胸部压缩量/mm	24.32	19.93

方案	伸张力矩/ （N·m）		屈曲力矩/ （N·m）		头部最大角度/（°）
方案	滑台	实车	滑台	实车	滑台	实车
4.0 kN	21		49		136
3.5 kN	24		52		134
DLT_4.0 kN	37		43		140
DLT_3.5 kN	29	40	44	47	143	120
BLL_4.0 kN	11		48		111
BLL_3.5 kN	10	10	33	35	121	110

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