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Introduction of Two New Pediatric Finite Element Models for Pedestrian and Occupant Protections

机译:推出两辆新儿科有限元模型,用于行人和乘员保护

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To help predict the injury responses of child pedestrians and occupants in traffic incidents, finite element (FE) modeling has become a common research tool. Until now, there was no whole-body FE model for 10-year-old (10 YO) children. This paper introduces the development of two 10 YO whole-body pediatric FE models (named CHARM-10) with a standing posture to represent a pedestrian and a seated posture to represent an occupant with sufficient anatomic details. The geometric data was obtained from medical images and the key dimensions were compared to literature data. Component-level sub-models were built and validated against experimental results of post mortem human subjects (PMHS). Most of these studies have been mostly published previously and briefly summarized in this paper. For the current study, focus was put on the late stage model development. After integrating all the sub-models to form the whole-body pedestrian model (standing), a set of positioning procedures was conducted to transform the pedestrian model into the occupant model (seated). In whole-body impact simulations, both FE models have shown marginally acceptable responses when compared to experimental data or other simulation results. However, lack of experimental data on pediatric subjects prevents further validations of these two models.
机译:为了帮助预测交通事故中儿童行人和居住者的伤害响应,有限元(FE)建模已成为一个共同的研究工具。到目前为止,10岁(10岁)的儿童没有全身FE模型。本文介绍了两种10 10岁的全身儿科FE模型(命名Charm-10),具有站立姿势,代表行人和坐姿,代表具有足够解剖细节的占用者。从医学图像获得几何数据,并将密钥尺寸与文献数据进行比较。组分级子模型是针对验尸人体受试者(PMHS)的实验结果而验证和验证。这些研究中的大多数都是在本文中简要概述的。对于目前的研究,重点是延迟模型开发。在整合所有子模型以形成全身行人模型(站立)之后,进行了一组定位程序,以将行人模型转换为乘员模型(坐姿)。在全身影响模拟中,与实验数据或其他模拟结果相比,两种FE模型都显示了略微可接受的反应。然而,缺乏关于儿科受试者的实验数据可以防止这两个模型的进一步验证。

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