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首页> 外文会议>2002 ASME International Mechanical Engineering Congress and Exposition , Nov 17-22, 2002, New Orleans, Louisiana >AN ANALYTICAL STUDY OF PEDESTRIAN HEADFORM IMPACTS USING A DUAL ASYMMETRICAL TRIANGLE FUNCTION
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AN ANALYTICAL STUDY OF PEDESTRIAN HEADFORM IMPACTS USING A DUAL ASYMMETRICAL TRIANGLE FUNCTION

机译：双对称三角函数对人头形态影响的分析研究

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摘要

Child headform and adult headform impacting the bonnet (hood) of a passenger vehicle are two of the four types of tests conducted by EuroNCAP to rate the pedestrian protection performance of new vehicles. The present work focuses on the dual-peak acceleration pulses of the headform often observed in the tests. A dual asymmetrical triangle function is chosen to model the pulse. Using the analytical function, the kinematical equations of the headform, and the explicit equations for calculating the maximum displacement, rebound time and Head Injury Criterion (HIC) value are derived. A parametric study is conducted to investigate how the wave shape affects the HIC value. Several important characteristics of the dual-peak pulses, including the headform rebound time and the maximum headform displacement, are identified. A spreadsheet tool has also been developed using the dual asymmetrical triangle function to relate the headform kinematics to the mechanical property of the bonnet.
机译：EuroNCAP为评估新车的行人保护性能而进行的四种类型的测试中，有两种会影响乘用车的发动机盖（引擎盖）的儿童头部和成人头部形状。目前的工作集中在经常在测试中观察到的头型的双峰加速脉冲。选择一个双不对称三角函数对脉冲进行建模。使用解析函数，得出头型的运动方程，以及用于计算最大位移，回弹时间和头颅损伤标准（HIC）值的显式方程。进行了参数研究，以研究波形如何影响HIC值。确定了双峰脉冲的几个重要特征，包括头形回弹时间和最大头形位移。还使用双不对称三角函数开发了电子表格工具，以将头模运动学与发动机盖的机械性能联系起来。

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