University of Michigan Transportation Research Institute, Ann Arbor, Michigan 48109, USA.
Traffic Inj Prev. 2010 Dec;11(6):606-12. doi: 10.1080/15389588.2010.506502.
Design and test a new pelvis for the Hybrid III 6-year-old (6YO) anthropometric test device (ATD) with a more humanlike bone structure, flesh contour, and flesh stiffness intended to provide more realistic interaction with belt restraints.
Target geometry for the new pelvis bone was based on a 3D model of the skeletal pelvis derived from statistical analysis of pediatric computed tomography (CT) scans. The current pelvis bone was reshaped to better match the target geometry, with a particular emphasis on the contour in the areas of belt interaction. The prominence representing the anterior-superior iliac spine (ASIS) was lowered by 15 mm. The pelvis flesh was molded using softer vinyl while maintaining a 10-mm flesh margin over the ASIS. A series of 20 sled tests was conducted to compare the performance of the modified pelvis with the current Hybrid III pelvis.
In a series of sled tests using a range of belt anchorage locations, a dummy equipped with the new pelvis did not submarine in conditions where the lap belt was positioned below the ASIS. Tests run with the lap belt initially positioned over the ASIS resulted in submarining, unlike tests performed with the standard dummy pelvis.
The new pelvis for the 6YO Hybrid III ATD better represents the skeletal and flesh geometry of similar-sized children. The ATD equipped with the new pelvis is more sensitive to lap belt geometry than the standard ATD. The modified ATD may provide an improved assessment of booster seats and belt restraints intended for child occupants.
为 Hybrid III 6 岁（6YO）人体模型测试设备（ATD）设计并测试一个新的骨盆，其骨骼结构、肉质轮廓和肉质硬度更接近人类，旨在与安全带约束装置实现更真实的交互。
新骨盆骨的目标几何形状基于从儿科计算机断层扫描（CT）扫描的统计分析得出的骨骼骨盆 3D 模型。当前骨盆骨被重塑以更好地匹配目标几何形状，特别强调了安全带相互作用区域的轮廓。代表前上髂棘（ASIS）的突起降低了 15 毫米。骨盆肉使用更柔软的乙烯基模制而成，同时在 ASIS 上方保持 10 毫米的肉边缘。进行了一系列 20 次 sled 测试，以比较改良骨盆与当前 Hybrid III 骨盆的性能。
在一系列使用各种安全带锚固位置的 sled 测试中，配备新骨盆的假人在安全带位于 ASIS 下方的情况下不会下沉。与使用标准假人骨盆进行的测试不同，最初将安全带置于 ASIS 上方的测试导致下沉。
用于 6YO Hybrid III ATD 的新骨盆更好地代表了类似大小儿童的骨骼和肉质几何形状。配备新骨盆的 ATD 比标准 ATD 对安全带几何形状更敏感。改良的 ATD 可能会更好地评估用于儿童乘员的 booster 座椅和安全带约束装置。
