车人碰撞中人地接触损伤仿真及防护方法鲁棒性分析

doi:10.19562/j.chinasae.qcgc.2024.03.015

Abstract

Abstract:

In pedestrian-vehicle accidents， pedestrians mainly suffer injuries from contact with vehicles and the ground. A large number of previous studies have validated multi-body pedestrian models during the vehicle contact phase， but few have validated them during the ground contact phase. In this paper， four PC-Crash pedestrian models for predicting pedestrian motion and ground contact after vehicle impact are evaluated. Comparison of HIC injuries by vehicle and ground contact with data from six cadaveric experiments in recent studies shows that among them the PC2014 pedestrian model predicts pedestrian head injuries well， with an average error of 6.07% and 5.85% for vehicle and ground contact HIC， respectively， which suggests that the PC2014 pedestrian model can be used to reproduce pedestrian-vehicle crashes and to develop future ground contact injury protection countermeasures. The robustness study of the controlled braking protection method shows that under the disturbance of three pedestrian postures （running， walking and emergency）， the average HIC reduction ratio is 63.2%， 57.9% and 67.8%， respectively， which indicates that the controlled braking protection method has a very good resistance to the disturbance of pedestrian postures. Further analysis of pedestrian injuries in different postures reveals that there is a significant difference between the three sequences of gait. The controlled braking protection method has better resistance to the disturbance of pedestrian postures under the emergency gait； while in the running gait sequence， the control brake protection method often has the lowest head-to-ground collision injuries， which suggests that the effect of different postures needs to be taken into account in the protection of pedestrians by the use of the control brake protection method， in order to further improve the effectiveness of the ground injury protection of the control brake protection method.

Key words: PC-Crash pedestrian model, vehicle control brake, pedestrian ground injury, pedestrian posture perturbation, robustness

Tiefang Zou,Zhiqi Liu,Xiangting Yuan,Taishan Cao,Zhuzi Liu. Simulation of Pedestrian-Ground Contact Injury in Vehicle-Pedestrian Collisions and Robustness Analysis of Protection Methods[J].Automotive Engineering, 2024, 46(3): 509-519.

Figures/Tables 17

References 33

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Test number	Vehicle		Pedestrian				NBLEH ^a
Test number	Model	Speed/（km·h^-1）	Age（y/o）	Sex	Height/m	Mass/kg	NBLEH ^a
Test 01	Peugeot 307	30.5	88	Male	1.74	66	0.7
Test 02	Peugeot 307	30.4	83	Male	1.72	69	0.7
Test 03	Citroen C4	20.4	94	Male	1.67	64	0.9
Test 04	Citroen C4	21.0	83	Male	1.67	55	0.9
Test 05	Renault Kangoo Ⅱ	30.1	94	Female	1.58	38	1.2
Test 06	Renault Kangoo Ⅱ	30.4	86	Male	1.62	69	1.1

行人模型	Test 01		Test 02		Test 03
行人模型	Head-x	Head-z	Head-x	Head-z	Head-x	Head-z
PC2006	0.277	0.125	0.656	0.451	0.316	0.200
PC2011	0.107	0.104	0.559	0.408	0.263	0.172
PC2014	0.183	0.266	0.578	0.268	0.213	0.091
BWM	0.116	0.467	0.478	0.290	0.234	0.199
行人模型	Test 04		Test 05		Test 06
行人模型	Head-x	Head-z	Head-x	Head-z	Head-x	Head-z
PC2006	0.121	0.103	1.538	0.241	1.175	0.267
PC2011	0.534	0.139	0.523	0.162	1.099	0.300
PC2014	0.171	0.080	0.399	0.151	0.859	0.137
BWM	0.194	0.093	0.619	0.204	1.241	0.273

行人模型	Test 01	Test 02	Test 03	Test 04	Test 05	Test 06
PC2006	18.4	18.7	13.8	11.3	17.7	17.3
PC2011	12.9	19.1	7.4	10.5	16.5	20.2
PC2014	19.9	15.2	2.4	1.4	11.8	4.1
BWM	23.4	11.9	6.1	11.8	19.7	5.1

车辆接触	Test 01	Test 02	Test 03	Test 04	Test 05	Test 06	MEH
PC2006	162.9	2.8		40.1	160.8	67	86.72
PC2011	49.2	51.2		204.8	13.4	77.2	79.16
PC2014	22.5	2.0		1.3	3.1	1.5	6.07
BWM	98.6	193.6		19.4	84.5	64.9	92.2
地面接触	Test 01	Test 02	Test 03	Test 04	Test 05	Test 06	MEH
PC2006	59.2	33.7	9.7	12.7	78.3		38.72
PC2011	59.8	11.1	67.4	74.7	58.9		54.38
PC2014	13.1	3.2	3.3	3.0	6.7		5.85
BWM	62.4	61.7	86.2	7.2	30.4		49.58

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Simulation of Pedestrian-Ground Contact Injury in Vehicle-Pedestrian Collisions and Robustness Analysis of Protection Methods

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