摘要
为了减少人与车相撞事故中行人的伤亡人数 ,采用有限元三维实体建模技术 ,建立了包括头皮和头骨两层球体结构的头部各向同性粘弹性模型和发动机罩板的各向同性弹性模型 ,分析了头部与发动机罩板的瞬态大变形非线性撞击响应 ,得到了头部与发动机罩板相撞时的速度、角度、位置及发动机罩板的厚度等因素对头部伤害的影响规律 .结果表明头部受到的撞击加速度值和文献中的试验结果吻合较好 .
The simulation of human head injury caused during collision with engine hood can provide a theoretical basis for reducing pedestrian's casualties in vehicle-pedestrian collision accidents. The 3-D finite element modeling technology is adopted to develop an isotropic-viscoelastic model of the head, which contains spherical scalp and skull, and an isotropic-elastic model of the engine hood. Nonlinear responses of the head's instantaneous deformation when it collides with the engine hood are analyzed. The influence of the impacting velocity, impacting angle, impacting position and the thickness of engine hood on the head's injury was analyzed. Analysis results reveal that the impacting acceleration of the head is in good accordance with the reported testing results, which prove that the model can provide efficient guidance for a vehicle design to protect the pedestrian head.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2003年第6期719-722,共4页
Journal of Harbin Institute of Technology
