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首页> 外文期刊>International journal of crashworthiness >Influence of headform mass and inertia on the response to oblique impacts
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Influence of headform mass and inertia on the response to oblique impacts

机译:头部质量和惯性对倾斜撞击响应的影响

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摘要

Current standard headforms used for sport and automotive helmet certification have poor biofidelity in terms of their mass and moments of inertia (MOI) and may not be suitable for evaluating helmet performance in oblique impacts. In this study, a novel inertially correct headform is designed and built and is compared with the HIII 50th percentile male and two standard (EN960:2006) headforms. Oblique impact response of both un-helmeted and helmeted headforms is investigated. This study shows that current standard headforms are unsuitable for oblique impact tests. For example, it has been shown that for helmeted impacts, differences in headform inertia of 98, 81 and 15% result in differences of 71, 68 and 29% in the peak rotational acceleration impact response about the x-, y- and z-axes rotation, respectively. Future certification tests that include oblique impacts will have to use more biofidelic headforms based on an appropriate population.
机译:目前用于运动和汽车头盔认证的标准头部在惯性和惯性矩(MOI)的质量和时刻(MOI)方面具有差的生物能力,并且可能不适合在倾斜影响中评估头盔性能。在这项研究中,设计和构建了一种新颖的惯性正确的头部,并与HIII 50百分位数和两个标准(EN960:2006)的头部进行了比较。调查了斜头头盔和头盔头部的倾斜冲击响应。本研究表明,目前的标准头部不适合倾斜的冲击试验。例如,已经表明,对于头盔的影响,98,81和15%的头部惯性的差异导致峰值旋转加速度的差异为71,68和29%关于X-,Y和Z-分别旋转。未来包括倾斜影响的认证测试将不得不根据适当的人口使用更多的生物元件。

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