电动两轮车骑车人紧急避让姿态对损伤风险的影响研究

doi:10.19562/j.chinasae.qcgc.2022.05.014

Abstract

Abstract:

For investigating the kinematic response and injury differences of riders in different emergent avoidance postures， human finite element model THUMS is used to develop four driving postures， i.e. one normal posture and three emergent avoidance postures： struck side foot landing （SFL）， non-struck side foot landing （NSFL） and landing on both feet （LBF）. A simulation model for a car impacting electric two-wheeler and its rider is built with eight groups of simulations （combination of 20 and 40 km/h two speeds and 4 driving postures） conducted to comparatively analyze the head injury parameters （peak angular acceleration， peak linear acceleration， HIC₁₅， intracranial pressure， CSDM_0.15 and MPS） and the Von-Mises stress distribution in lower limbs， and to evaluate the ground impact injury risk of two-wheeler rider. The results show that with a vehicle speed of 20 km/h， the head injury of normal posture rider in ground impact exceeds AIS 4+， while the lower limbs injury of riders with all types of postures do not exceed the fracture threshold. With a vehicle speed of 40 km/h， the head-ground impact injury of riders with all types of postures exceeded AIS 4+， the rider with an emergent avoidance posture of LBF has the highest risk of head injury， the rider with a normal posture has the lowest risk of lower limbs injury， while the rider with an emergent avoidance posture of SFL has a risk of lower limbs fracture. This study clarifies the effects of different emergent avoidance postures on riders' injuries in ground impact and provides an important reference basis for automotive safety technology research.

Key words: electric two-wheeler, riders, emergent avoidance posture, ground impact injury risk, finite element analysis

Yong Han,Liya Lin,Yong He,Di Pan,Hongyu Cai,Qian Peng,Hao Feng. Research on the Effects of Emergent Avoidance Postures of Electric Two-wheeler Riders on Their Injury Risk[J].Automotive Engineering, 2022, 44(5): 764-770.

Figures/Tables 8

References 31

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参数	变量
车型	卡罗拉
汽车车速	20 km/h		40 km/h
电动车车速	15 km/h
骑车人姿态	正常	SFL	NSFL	LBF
碰撞位置	偏置+847 mm

Research on the Effects of Emergent Avoidance Postures of Electric Two-wheeler Riders on Their Injury Risk

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