Comparative analysis of the effect of two types of helmets on the neck of pilots under rapid braking condition
Yuan Xiaoxia
Li Kehua
Liu Qiuhong
Abstract：Objective To compare and analyze the biological effects of two types of helmets,which have different masses and centroids,on the neck of pilots under rapid braking condition,and provide new ideas for improving the ergonomic design of helmets for pilots.Methods A finite element model of the head,neck,helmet,and restraint system was established using Hyper Mesh 14.0 software.Finite element simulation was used to study the neck biological effects of pilots wearing different helmets for rapid braking.Results After wearing Type Ⅰ and Type Ⅱ helmets,the trend,occurrence time,and location of the maximum stress borne by each vertebra and intervertebral disc are basically consistent.The maximum stress on the vertebrae above C3 is smaller when wearing a Type Ⅰ helmet,while the maximum stress on the vertebrae below C3 is smaller when wearing a Type Ⅱ helmet.The maximum stress on the C2～C3 intervertebral disc is relatively small when wearing a TypeⅠhelmet,while the intervertebral discs below it are relatively small when wearing a Type Ⅱ helmet.The ligament elongation rate and maximum neck injury index Nij of wearing Type Ⅰ helmets are both relatively high.Conclusion Type Ⅰ helmet has a significant biological impact on the neck of pilots during rapid braking.
Keywords：helmetpilotneckimpact
Publication Date：2025-06-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 241-245 )