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Normalized frontal impact biofidelity kinematic corridors using post mortem human surrogates
Journal of the Mechanical Behavior of Biomedical Materials ( IF 3.9 ) Pub Date : 2017-12-07 , DOI: 10.1016/j.jmbbm.2017.12.007
Mike W.J. Arun , Prasannaah Hadagali , Frank Pintar , Narayan Yoganandan

Due to reducing cost and powerful computing resources and the ability of finite element human body models (FEHBM) to predict human body response more realistically, they are gaining acceptance to be a substitute for mechanical surrogates. Unlike mechanical surrogates, FEHBM can realistically simulate human kinematics and kinetics. Moreover, an array of quantities can be directly measured from FEHBMs. However, similar to Anthropomorphic Test Devices (ATDs), in order to evaluate the biofidelity, these models must be validated using PMHS response corridors. Therefore, availability of such PMHS corridors that can be used to validate both ATD and FEHBM kinematics is of primary importance. The current study presents normalized biofidelity corridors of head CG, T1, T12, and sacrum accelerations using PMHS frontal sled tests that were previously conducted. In addition, rotational accelerations and displacements of the head are also presented. The experimental data were collected using four specimens. Each specimens were tested with non-injurious pulses using two different velocities (low: 3.6 m/s and medium: 6.9 m/s). These data were normalized using mass-based technique to represent mid-sized United States population. Using the normalized data, average and plus/minus one standard deviation response corridors were generated that can be used to evaluate the biofidelity of ATDs and FEHBMs.



中文翻译:

使用验尸后的人类替代物规范化的正面碰撞生物保真运动学走廊

由于降低了成本,强大的计算资源以及有限元人体模型(FEHBM)能够更实际地预测人体反应的能力,它们已被人们接受,可以代替机械替代物。与机械代理不同,FEHBM可以真实地模拟人体运动学和动力学。此外,可以从FEHBM中直接测量一系列数量。但是,类似于拟人化测试设备(ATD),为了评估生物保真度,必须使用PMHS响应通道对这些模型进行验证。因此,可用于验证ATD和FEHBM运动学的PMHS走廊的可用性至关重要。当前的研究使用以前进行过的PMHS额雪橇测试,展示了头部CG,T1,T12和骨加速度的标准化生物保真走廊。此外,还显示了头部的旋转加速度和位移。实验数据是使用四个样本收集的。使用两种不同的速度(低:3.6 m / s和中:6.9 m / s)对每个样本进行无伤害脉冲测试。使用基于质量的技术对这些数据进行归一化,以代表美国的中型人口。使用归一化的数据,可以生成平均值和正负标准差响应通道,这些通道可用于评估ATD和FEHBM的生物保真度。使用基于质量的技术对这些数据进行归一化,以代表美国的中型人口。使用归一化的数据,可以生成平均值和正负标准差响应通道,这些通道可用于评估ATD和FEHBM的生物保真度。使用基于质量的技术对这些数据进行归一化,以代表美国的中型人口。使用归一化的数据,可以生成平均值和正负标准差响应通道,这些通道可用于评估ATD和FEHBM的生物保真度。

更新日期:2017-12-07
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