头部与头盔接触力的测量与评估。
Measurement and Assessment of Head-to-Helmet Contact Forces.
作者信息
Jennings Turner, Tillman Aidan, Mukasa D'mitra, Marchev Michael, Müftü Sinan, Amini Rouzbeh
机构信息
Department of Mechanical and Industrial Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, USA.
Department of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA, 02115, USA.
出版信息
Ann Biomed Eng. 2025 Apr;53(4):946-955. doi: 10.1007/s10439-025-03677-3. Epub 2025 Jan 25.
PURPOSE
To evaluate the population variation in head-to-helmet contact forces in helmet users.
METHODS
Four different size Kevlar composite helmets were instrumented with contact pressure sensors and chinstrap tension meters. A total number of 89 volunteers (25 female and 64 male volunteers) participated in the study. The length, width, and circumference of their heads were measured and each volunteer was assigned a helmet size. Volunteers were asked to wear the helmet in three different configurations and the chinstrap tension and contact force between the head and each of the seven interior pads were recorded.
RESULTS
The majority of forces measured on any individual pad were between 0 and 5 N. However, some users exhibited pressure points with forces as high as 30 N. The contact force distribution is non-uniform across the interior of the helmet, with the largest force concentrated at the front. Head shape is a major driver of the observed contact force. There was a statistically significant difference between female and male volunteers, and between groups with different experience levels.
CONCLUSIONS
The fit of helmet systems is highly subject specific. The current metrics used to assign helmet sizes may not accurately predict correct helmet fit.
目的
评估头盔使用者头部与头盔接触力的人群差异。
方法
为四种不同尺寸的凯夫拉复合头盔配备接触压力传感器和帽带张力计。共有89名志愿者（25名女性和64名男性志愿者）参与了这项研究。测量了他们头部的长度、宽度和周长，并为每位志愿者分配了一个头盔尺寸。要求志愿者以三种不同的配置佩戴头盔，并记录帽带张力以及头部与七个内部衬垫之间的接触力。
结果
在任何单个衬垫上测得的大多数力在0至5牛之间。然而，一些使用者出现了高达30牛的压力点。头盔内部的接触力分布不均匀，最大的力集中在前面。头部形状是观察到的接触力的主要驱动因素。女性和男性志愿者之间以及不同经验水平的组之间存在统计学上的显著差异。
结论
头盔系统的贴合度高度因人而异。当前用于确定头盔尺寸的指标可能无法准确预测正确的头盔贴合度。
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