摘要
为研究在不同正面碰撞加速度波形及安全带是否预紧、限力的条件下,采用婴儿提篮约束时Q1.5假人头部、颈部、胸部的损伤情况,选取3款不同实车按照GB 11551—2014《汽车正面碰撞的乘员保护》的规定开展试验得到B柱加速度曲线,通过加速滑台进行模拟复现,并参照《C-NCAP管理规则(2024年版)》正面100%重叠刚性壁障碰撞试验中Q3假人试验的评分指标,对车辆在Q1.5假人试验中的表现进行评分。结果表明:碰撞过程中安全带预紧时肩带产生斜向上的拉力会导致头部受到较大冲击;当碰撞加速度一致时,安全带预紧对头部、胸部合成加速度峰值及其累积3 ms合成加速度、HIC_(15)、腰带力峰值、颈部剪切力最小值、颈部弯矩最小值的影响大于限力,肩带力峰值则为限力影响大于预紧;对假人损伤的影响程度由高到低依次为碰撞加速度波形、安全带是否预紧、安全带是否限力;假人胸部损伤最大,颈部损伤最小。
To study the head,neck,and chest injuries of Q1.5 dummy when restrained by an infant carrier under different frontal collision acceleration waveforms and whether the seat belt is pre-tightened and limited by force,three different real vehicles are selected to obtain B-pillar acceleration curves according to GB 11551—2014“Passenger Protection in Frontal Collisions of Vehicles”.The acceleration curves are simulated and reproduced using an acceleration slide table,and the Q3 dummy’s scoring index in the frontal 100%overlapping rigid barrier collision test of the“C-NCAP Management Rules(2024 Edition)”is used as reference to score the Q1.5 dummy in test.The results indicate that during a collision,when the seat belt is pre-tightened,the diagonal upward tension generated by the shoulder strap can cause significant impact on the head;when the collision acceleration is consistent,the pre-tensioning of the seat belt has a greater impact on the peak combined acceleration of the head and chest,as well as the 3 ms peak,HIC15,the peak waist belt force,the neck F_(x-min),and M_(y-min),than the force limit.The limiting effect of the peak shoulder belt force is greater than the pretensioning;the factors that affect dummy injury,from high to low,are collision acceleration waveform,whether the seat belt is pre-tightened,and whether the seat belt is force limited;for all parts of the dummy’s body,the chest substains greatest damage and the neck substains the least damage.
作者
王庭槐
李永刚
李建功
曹啸峰
杜学贤
匡芳
Wang Tinghuai;Li Yonggang;Li Jiangong;Cao Xiaofeng;Du Xuexian;Kuang Fang(Xiangyang Da An Automobile Test Center Limited Corporation,Xiangyang 441004)
出处
《汽车工程师》
2025年第3期27-34,共8页
Automotive Engineer
关键词
婴儿提篮
Q1.5假人
损伤分析
正面碰撞
乘员保护
Infant carrier
Q1.5 Dummy
Injury analysis
Frontal collision
Occupants protection
