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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers. Part L, Journal of Materials: Design and Application >Assessment of a bicycle helmet liner with semispherical cones
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Assessment of a bicycle helmet liner with semispherical cones

机译：评估半球形锥体的自行车头盔衬里

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摘要

Helmets reduce the frequency and severity of head and brain injuries resulting from bicycle crashes. Generally, a bike helmet consists of the outer shell, liner, vents and straps. The liner is the major helmet component reducing head injury in an accident. Using superior energy absorbing structures and materials as helmet liners to meet the higher safety standards should thus be considered. In this study, a shock absorption test was performed in accordance with the EN1078 standard to evaluate the energy absorption capability of a helmet on the market. Then, the finite element analyses of helmet impact tests modelled using LS-DYNA software. To verify the accuracy of the model, the simulation results were compared with experimental data. Finally, an innovative design of helmet model with semispherical cone liner was considered in this study. To assess the dynamic energy absorption of this helmet, a simulation was performed in accordance with the EN1087 standard for shock absorption tests. The resultant simulation revealed that the helmet with the semispherical cone liner has the potential to protect the human head. This innovative design for a helmet liner can serve as a valuable idea to assist future development of safety-helmet technologies.
机译：头盔可减少因自行车撞车造成的头部和大脑受伤的频率和严重程度。通常，自行车头盔由外壳，衬里，通风孔和皮带组成。衬里是头盔的主要部件，可减少事故中的头部受伤。因此，应考虑使用优质的吸能结构和材料作为头盔内衬，以满足更高的安全标准。在这项研究中，根据EN1078标准进行了减震测试，以评估市场上头盔的能量吸收能力。然后，使用LS-DYNA软件建模的头盔冲击试验的有限元分析。为了验证模型的准确性，将仿真结果与实验数据进行了比较。最后，本研究考虑了具有半球形圆锥衬里的头盔模型的创新设计。为了评估该头盔的动态能量吸收，根据EN1087标准进行了冲击吸收测试模拟。模拟结果表明，带有半球形圆锥衬里的头盔具有保护人头的潜力。头盔衬里的这种创新设计可以作为有价值的想法，以协助安全头盔技术的未来发展。

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