摘要
基于人体生物动力学模型简化原则建立了坐姿人体二维有限元模型,计算得出人体坐姿模型在不同冲击工况下的动力学响应。结果表明,坐姿人体受垂直方向冲击时,头部加速度和速度响应较大,同时头部伤害指标值(Head Injury Criterion,HIC)远大于水平冲击时的头部伤害指标值。受水平冲击时,人体腰部的加速度响应较大。在提供安全带保护的情况下,尽管骨盆处安全带能起到一定的保护作用,但肩部安全带的保护效果更为明显;此外,同时使用肩部和骨盆处安全带能大幅降低坐姿人体的加速度响应和头部伤害指标,是一种有效的安全保护措施。
A two-dimensional finite element model was established based on the simplified spine model for seated human body.The dynamical responses of human body were numerically calculated in different impact cases.The results show that the impact responses of the head and the head injury criterion(HIC) of the seated human body under vertical impact excitation are more serious than those under horizontal impact excitation,while the impact responses of the waist under horizontal impact is larger than that under vertical impact.Though the safety belt at pelvis can protect human body to a certain extent,the safety protection of the safety belt at shoulders is more effective.It is found that using the safety belts at shoulders and pelvis at the same time,the impact response of human body and the HIC can be decreased to a large extent and it is a promising protection measure for seated human body in vehicles.
出处
《振动与冲击》
EI
CSCD
北大核心
2010年第9期151-154,200,共5页
Journal of Vibration and Shock
基金
高等学校学科创新引智计划项目(B07050)
