正面碰撞等级预估方法

doi:10.19562/j.chinasae.qcgc.2022.03.011

Abstract

Abstract:

Through the statistics and summing-up of real frontal crash test data in NHTA and IIHS and analytical solving， an evaluation method for the impact waveform and intrusion in 100% overlap frontal rigid barrier （FRB） crash and 50% overlap moveable progressive deformable barrier （MPDB） offset crash evaluated by C-NCAP， and frontal small overlap barrier （SOB） offset crash evaluated by C-IASI （China insurance automobile safety index） is established， which can lay down a good foundation for the matching of occupant restraint system and provide assurance for vehicles to obtain excellent star grade.

Key words: frontal crash, crash waveform, crash grade prediction

Hongbin Tang,Junyuan Zhang,Guojun Liu. A Method for Predicting Frontal Crash Grade[J].Automotive Engineering, 2022, 44(3): 392-398.

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波形参数		相关性系数
原始碰撞波形参数	A_max	0.391 56
	D_max	0.317 3
	T_E	0.415 95
	G_o	0.383 78
	T_o	0.293 13
乘员相关参数	OLC	0.518 89
双梯形波参数	G₁	0.119 41
	G₂	0.165 2
	T_C	0.052 12
	D₁	0.014 32
	i	0.223 98
	ω	0.195 16
	α	0.135 37
	KAC	0.065 81
	KAE	0.306 82

星级	车型总数	满足条件车型数	占比/%
五星	34	25	73.53
四星	38	15	39.47
三星	11	5	45.45

平均值范围	满足条件车型总数	五星车		四星车
平均值范围	满足条件车型总数	总数	占比/%	总数	占比/%
f<0.2	5	4	80.00	1	20.00
f<0.3	8	7	87.50	1	12.50
f<0.4	18	11	61.11	4	22.22
f<0.5	26	15	57.69	7	26.92
f<0.6	45	25	55.56	15	33.33
f<0.7	66	31	46.97	27	40.91
f<0.8	79	34	43.04	35	44.30

1	NHTSA. Search vehicle safety ratings for NHTSA［DB/OL］. https：//www.nhtsa.gov/ratings.
2	IIHS. Search vehicle safety ratings for IIHS［DB/OL］. https：//www.iihs.org/ratings.
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4	Small overlap frontal crashworthiness evaluation crash test protocol （Version VII）［R］. IIHS， May，2021.
5	Moderate overlap frontal crashworthiness evaluation guidelines for rating structural performance （Version III）［R］. IIHS， July，2021.

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A Method for Predicting Frontal Crash Grade

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