共查询到19条相似文献,搜索用时 202 毫秒
1.
2.
3.
4.
5.
6.
《汽车工程》2015,(6)
针对目前国内外对正面碰撞后期,驾驶员在安全气囊反弹力与安全带约束力作用下,向后复位运动,其腰部与座椅靠背接触后的颈部伤害研究很少的现状,进行了驾驶员上、下颈部运动状态研究,并分析座椅特征参数对颈部伤害的影响。为此以某型轿车乘员室相关尺寸和性能参数为依据,采用碰撞仿真软件MADYMO建立了驾驶员约束系统仿真模型,并进行仿真与试验验证。结果表明:减小座椅头枕刚度,可降低上颈部伸张弯矩峰值;减小靠背上部刚度与靠背倾角调节器转动刚度,可显著降低上、下颈部伸张弯矩峰值和颈部伤害指标Nkm与Nij;增加头枕前倾角,可大幅降低下颈部伸张弯矩峰值,但过大的头枕前倾角会增大颈部伤害指标。 相似文献
7.
8.
为降低在低速追尾碰撞中乘员颈部受到的挥鞭伤害,文章对挥鞭伤生成原理、E-NCAP及C-NCAP挥鞭伤试验的评价方法进行了研究,并依据E-NCAP中等强度动态试验标准,对普通头枕及Re-active头枕进行试验对比,从结果评价中可看出,Re-active头枕在头枕接触时间、颈部伤害指标NIC、Nkm及上颈部剪切力4方面均优于普通头枕,试验结果总得分也高于普通头枕,说明Re-active头枕能够在低速尾碰过程中更有效地保护乘员头颈部。 相似文献
9.
为降低在低速追尾碰撞中乘员颈部受到的挥鞭伤害,文章对挥鞭伤生成原理、E-NCAP及C-NCAP挥鞭伤试验的评价方法进行了研究,并依据E-NCAP中等强度动态试验标准,对普通头枕及Re-active头枕进行试验对比,从结果评价中可看出,Re-active头枕在头枕接触时间、颈部伤害指标NIC、Nkm及上颈部剪切力4方面均优于普通头枕,试验结果总得分也高于普通头枕,说明Re-active头枕能够在低速尾碰过程中更有效地保护乘员头颈部。 相似文献
10.
11.
Domestic automobile insurance claims were investigated to correlate the driver neck injury risk with the safety rating of
the head restraint, the severity of vehicle damage, and other human factors. The results of our statistical analysis reveal
that the risk of neck injury for the driver is significantly different for vehicle size, use, driver gender, driver age, impact
direction, accident location, and safety rating of head restraint, depending on vehicle the damage level which is assumed
to imply impact severity during a rear-end crash accident. One of the unique findings from domestic insurance claims from
low-speed rear-end crash accidents is the frequent reports of lower back injury together with whiplash. Thus, the risk of
lower back discomfort is also included in this statistical analysis. 相似文献
12.
Yasuhiro Matsui Masami Kubota Shoko Oikawa 《International Journal of Automotive Technology》2018,19(1):77-83
The Japan New Car Assessment Program (J-NCAP) evaluates the performance of cars in terms of protection against whiplash injuries in rear-end collisions. In the test protocol, a simplified triangular acceleration is applied to the sled. This study clarifies whether biofidelic rear-impact dummy II (BioRID II) measurements obtained for simplified triangular acceleration reflect car-to-car rear-end impacts in real-world accidents in Japan. We conducted a car-to-car rear-end impact experiment and a simplified-triangular-acceleration sled test. Our results indicate that the time series of dummy responses were approximately consistent in the two test conditions. The neck injury criterion (NIC) and maximum acceleration of the head and T1 measured using the BioRID II dummy were similar in the car-to-car and sled experiments. This revealed that the J-NCAP test protocol using simplified triangular acceleration reflects the car-to-car rear-end impact experiment using Japanese cars, in terms of the NIC and maximum acceleration of the head and T1. 相似文献
13.
14.
针对目前儿童乘员保护不足的问题,本文在某款C级轿车上采用50km/h的正面100%重叠刚性壁障碰撞试验(简称正碰试验)和64km/h的正面40%重叠可变形壁障偏置碰撞试验(简称偏置试验)对比分析Q3儿童的损伤情况。依据C-NCAP 2021版评价规程对2个试验工况中Q3儿童进行评价。2种工况,儿童假人体现的损伤情况均严重。正碰试验中头部、颈部和胸部压缩量的损伤值更大。对胸部累积3ms合成加速度而言,偏置试验得分很低,损伤更大。目前,5点式儿童安全带起不到很好的缓冲吸能的保护效果。车辆开发商可以设计能更好保护儿童乘员的约束系统。 相似文献
15.
16.
17.
18.
The objective of this study was to study whiplash injury outcome in front-seat occupants in rear-end impacts using double paired comparison technique. The combination of gender, seated position, and outcome was analyzed. Folksam, a Swedish insurance company, has a database of whiplash injuries. A questionnaire was used to collect study data. The response rate was 81%. The inclusion criteria included medical impairment one year after the impact, as judged by medical specialists. The study included rear-end impacts between 1990 and 1999 that resulted in at least one permanent neck injury impairment; in total, 430 impacts with 860 occupants and 444 impairments. Of those suffering impairment, 302 were female and 142 male; 235 were seated in the driver's seat and 209 in the front passenger seat. Relative risk estimates for impairing whiplash injury, by gender and seated position:
- 1.
- Driver male (DM)/passenger female (PF) relative risk = 0.5 n = 218 相似文献