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首页> 外文期刊>Journal of Biomechanics >Anthropometric specification of child crash dummy pelves through statistical analysis of skeletal geometry.
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Anthropometric specification of child crash dummy pelves through statistical analysis of skeletal geometry.

机译：儿童碰撞假人骨的人体测量学规格，通过对骨骼几何形状的统计分析。

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The pelves of the child dummies of the widely used Hybrid-III family are based on minimal data from children. Because an accurate pelvis design is critical for realistic assessments of belt restraint interactions, an analysis of medical imaging data was conducted to develop guidance for improved pelvis design. Three-dimensional polygonal meshes of the bony pelvis were generated from computed tomography (CT) data from 81 children from ages 5 to 11. After aligning to a uniform anatomical coordinate system, the meshes were resampled to create a quadrilateral mesh with 12,960 vertices for each pelvis. A principal components analysis was conducted with the mesh vertex coordinates and the locations of 31 landmarks. Over 99% of the variance in size and shape was accounted for by the first 40 components. A three-dimensional model representing the target for a new dummy pelvis was developed using bispinous breadth as the predictor variable. To obtain the appropriate geometry for the six-year-old (6YO) and 10YO Hybrid-III dummies, a regression analysis was conducted using a large sample of child anthropometry data from a previous study to obtain a target dimension for bispinous breadth, using the design stature for each dummy as input. A separate regression analysis was conducted to predict principal component scores from bispinous breadth. Reconstructing a pelvis model from the principal components scores predicted for the target bispinous breadth values yielded a three-dimensional design target for the each dummy. The new pelvis target is similar in overall size to the current pelvis components, but the location of the anterior-superior iliac spine is markedly lower, which has important implications for belt interaction.
机译：广泛使用的Hybrid-III系列儿童假人的骨盆是基于儿童的最少数据。由于精确的骨盆设计对于安全带约束相互作用的现实评估至关重要，因此进行了医学影像数据分析，以为改善骨盆设计提供指导。根据81位5至11岁儿童的计算机断层扫描（CT）数据，生成了骨盆的三维多边形网格。对齐统一的解剖坐标系后，对网格进行重新采样，以创建每个具有12,960个顶点的四边形网格骨盆。用网格顶点坐标和31个地标的位置进行主成分分析。尺寸和形状变化的99％以上是前40个组件造成的。使用双棘宽作为预测变量，开发了代表新假骨盆目标的三维模型。为了获得适合六岁儿童（6YO）和10YO Hybrid-III假人的几何形状，使用来自先前研究的大量儿童人体测量学数据样本进行了回归分析，以使用双棘宽度获得目标尺寸。每个假人的设计身材作为输入。进行了单独的回归分析，以根据双棘宽度预测主成分得分。从为目标双棘宽度值预测的主成分得分重建骨盆模型，可以为每个假人生成三维设计目标。新的骨盆靶的总体尺寸与当前骨盆组件相似，但上上棘的位置明显较低，这对腰带相互作用具有重要意义。

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