Door velocity and occupant distance affect lateral thoracic injury mitigation with side airbag.
Door velocity and occupant distance affect lateral thoracic injury mitigation with side airbag.
复制标题
车门速度和乘员距离会影响侧面安全气囊减轻横向胸部损伤的效果。
DOI：
10.1016/j.aap.2010.11.002
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Pintar,FrankA
中科院分区：
文献类型：
--
作者：
Hallman,JasonJ;Yoganandan,Narayan;Pintar,FrankA
研究了侧面安全气囊展开时钝性侧面碰撞中胸部损伤风险与车门速度参数和乘员距离参数的关系。雪橇碰撞模型进行了验证MADYMO第五十百分位面乘员模型和广义有限元躯干侧气囊。撞击速度从4.0 m/s增加到9.0 m/s;乘员-安全气囊距离（安全气囊激活时）从2.0 cm增加到24.0 cm;还检查了无安全气囊的模拟。使用压缩，偏转率，和粘性准则，安全气囊性能的特点是乘员受伤的风险在三个点的利益：乘员距离的最大保护，距离最大的伤害风险，和新定义的临界距离。显示最大安全气囊保护的乘员距离，即，受伤风险最低，随着撞击速度的增加而增加。无论撞击速度如何，当乘员离安全气囊最近时，受伤风险最大。临界距离被定义为安全气囊展开加剧伤害风险的最远距离。该临界距离仅在考虑胸部按压时变化，在距离气囊3和10 cm之间，但在评价粘性标准时没有变化。在冲击速度小于或等于6 m/s时，最具保护性的乘员位置在安全气囊变得有害的临界距离的2cm以内。因此，在ΔV较低时，躯干气囊的伤害缓解可能更难实现。
The relationship between thoracic injury risk and parameters of door velocity and occupant distance was delineated in blunt lateral impact with side airbag deployment. A sled impact model was exercised with the validated MADYMO fiftieth percentile facet occupant model and a generalized finite element torso side airbag. Impact velocity was incremented from 4.0 to 9.0m/s; occupant–airbag distance (at time of airbag activation) was incremented from 2.0 to 24.0cm; simulations without airbag were also examined. Using compression, deflection rate, and the Viscous Criterion, airbag performance was characterized with respect to occupant injury risk at three points of interest: occupant distance of most protection, distance of greatest injury risk, and the newly defined critical distance. The occupant distance which demonstrated the most airbag protection, i.e., lowest injury risk, increased with increasing impact velocity. Greatest injury risk resulted when the occupant was nearest the airbag regardless of impact velocity. The critical distance was defined as the farthest distance at which airbag deployment exacerbated injury risk. This critical distance only varied considering chest compression, between 3 and 10cm from the airbag, but did not vary when the Viscous Criterion were evaluated. At impact velocities less than or equal to 6m/s, the most protective occupant location was within 2cm of the critical distance at which the airbag became harmful. Therefore, injury mitigation with torso airbag may be more difficult to achieve at lower ΔV.