高G值着陆冲击下头、颈、胸、脊椎损伤因子及评价指标的研究

Study on evaluation guideline and injury factor of head,neck,thorax and vertebra during high G landing impact

目的:研究在+Gx和+Gz复合冲击作用下,人体响应和损伤的一般特点。方法:通过HybridIII型假人,在航天返回舱座椅环境中,进行不同输入量级的复合冲击实验和相关的数据分析。结果:实验数据呈现出良好的一致性。在6～30g不同输入加速度情况下,随输入加速度的增加,人体头、颈、胸、脊椎等部位的响应损伤均分别呈现良好的二次线性响应增长规律,R2在0.9以上。结合不同的评价指标,分别进行了损伤因子评价分析,从而获得了不同身体部位损伤评价的影响程度。结论:头、颈、胸、脊椎等不同身体部位的冲击响应损伤规律不同,针对损伤敏感部位进行高G值复合着陆冲击下的损伤规律和防护原则研究是必要的。

AIM:To study the characteristics of human body dynamics response and injury induced by+Gx &+Gz high acceleration landing impact. METHODS:Using Hybrid III dummy to put in the backing cabin of space,experiments on landing impact of all levels were carried out and related data were analyzed. RESULTS:Experimental data showed good consistency.The injury values of head,neck,thorax and vertebra respectively showed good orderliness quadratic function(R2 >0.9) and increased with 6-30 g input accelerations.Using different guideline,injury factors were analyzed to obtain the damage degree of different parts of human bodies. CONCLUSION: The regular patterns of dynamic response to injuries of head,neck,thorax and vertebra are dissimilar.It is necessary to focus on high injury sensitivity bodies for studying injury regular pattern and protection principle at high G landing impact conditions.