摘要
提出了头枕安全气囊的设想:在前排座椅头枕内部增设安全气囊,在正面碰撞中该气囊打开并迅速膨胀,在后排乘员头部与座椅间形成气垫,并吸收碰撞能量,避免头部与前排头枕或靠背发生二次碰撞,从而达到减轻乘员伤害的目的。为此,以某型轿车相关尺寸与性能参数为依据,采用碰撞仿真软件MADYMO建立了后排乘员约束系统仿真模型,并经试验验证。仿真结果表明:相比于普通前排座椅,头枕气囊能够使后排乘员头部伤害值HIC15下降66.4%,颈部枕骨伸张弯矩下降63.9%,而胸部伤害值T3MS仅增加5.5%。
An assumption of headrest-airbag is putted forward in this paper: an airbag is added in the interior of front seat headrest,the airbag opens and expands instantly to form the airbag cushion between rear occupant' s head and seat in the collision,absorbs impact energy and avoids the occurrence of the secondary collision between head and frontal headrest or seatback,thereby reducing occupant injury. Based on the geometry and feature of one car model,the rear occupant restraint system model is set up with MADYMO simulation software,and the restraint model is verified with the real test. The results of computer simulation show that compared with normal front seat,HIC15( Head Injury Criterion) and neck occipital moment of rear occupant drops by 66. 4% and 63. 9% respectively,but T3MS( Thorax 3ms Resultant Acceralation) only increases by 5.5% when the headrest-airbag is used.
出处
《机械科学与技术》
CSCD
北大核心
2015年第9期1427-1430,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
江苏省普通高校研究生科研创新计划项目(CXLX12-0631)
汽车智能乘员约束系统控制策略研究项目(20091106)资助
关键词
正面碰撞
前排头枕气囊
后排乘员
保护
frontal collision
headrest-airbag of front seat
rear occupant
protection
computer simulation
