基于PCDS(Pedestrian Crash Data Study)数据库,分析了人车相撞事故中各种因素对人体下肢损伤程度、损伤形式的影响,对目前各国关于行人下肢损伤生物力学特性的相关文献进行了总结和分析,并且比较了目前现有的腿部仿形器以及相关的试验...基于PCDS(Pedestrian Crash Data Study)数据库,分析了人车相撞事故中各种因素对人体下肢损伤程度、损伤形式的影响,对目前各国关于行人下肢损伤生物力学特性的相关文献进行了总结和分析,并且比较了目前现有的腿部仿形器以及相关的试验方法,从而为开展行人下肢损伤的研究提供了依据。展开更多
Though the bumper of a vehicle plays a major role in protecting the vehicle body against damage in low speed impacts,many bumpers,particularly in large vehicles,are too stiff for pedestrian protection.In designing a b...Though the bumper of a vehicle plays a major role in protecting the vehicle body against damage in low speed impacts,many bumpers,particularly in large vehicles,are too stiff for pedestrian protection.In designing a bumper for an automobile,pedestrian protection is as important as bumper energy absorption in low speed collisions.To prevent lower extremity injuries in car-pedestrian collisions,it is important to determine the loadings that car front structures impart on the lower extremities and the mechanisms by which injury is caused by these loadings.The present work was focused on gaining more insight into the injury mechanisms leading to both ligament damage and bone fracture during bumper-pedestrian collisions.The European Enhanced Vehicle-safety Committee (EEVC) legform impactor model was introduced and validated against EEVC/WG17 criteria.The collision mechanism between a bumper and this legform impactor was investigated numerically using LS-DYNA software.To identify the effect of the bumper beam material on leg injuries,four analyses were performed on bumpers that had the same assembly but were made from different materials.展开更多
文摘基于PCDS(Pedestrian Crash Data Study)数据库,分析了人车相撞事故中各种因素对人体下肢损伤程度、损伤形式的影响,对目前各国关于行人下肢损伤生物力学特性的相关文献进行了总结和分析,并且比较了目前现有的腿部仿形器以及相关的试验方法,从而为开展行人下肢损伤的研究提供了依据。
文摘Though the bumper of a vehicle plays a major role in protecting the vehicle body against damage in low speed impacts,many bumpers,particularly in large vehicles,are too stiff for pedestrian protection.In designing a bumper for an automobile,pedestrian protection is as important as bumper energy absorption in low speed collisions.To prevent lower extremity injuries in car-pedestrian collisions,it is important to determine the loadings that car front structures impart on the lower extremities and the mechanisms by which injury is caused by these loadings.The present work was focused on gaining more insight into the injury mechanisms leading to both ligament damage and bone fracture during bumper-pedestrian collisions.The European Enhanced Vehicle-safety Committee (EEVC) legform impactor model was introduced and validated against EEVC/WG17 criteria.The collision mechanism between a bumper and this legform impactor was investigated numerically using LS-DYNA software.To identify the effect of the bumper beam material on leg injuries,four analyses were performed on bumpers that had the same assembly but were made from different materials.
