基于国家标准GB 11552滑车碰撞试验方法的乘员保护分析

Occupant protection analysis based on the China National Standard GB 11552 about sled test method

为完善中国国家标准GB 11552,保护驾乘人员的安全,基于滑车碰撞试验平台,搭建了6种碰撞工况试验方法 ,包括5^(th)假人+18°、50^(th)假人+18°、95^(th)假人+18°、5^(th)假人-18°、50^(th)假人-18°和95^(th)假人-18°等。分析了40款车型130次试验的假人损伤,探究了驾乘人员躯干和下肢的损伤风险。结果显示:这6种试验工况的假人头部损伤因数分别为:0.66、0.69、0.73、0.95、0.90和0.72;假人躯干损伤风险因数趋近1;假人下肢有损伤风险;身材较大的假人,产生损伤风险更大;靠近撞击侧的大腿损伤风险,高于外侧。因此,作者建议:在未来的中国国家标准GB 11552中,应对假人的躯干和下肢,进行适量的界定。

Six kinds of collision conditions were built including the 5^(th) dummy+18°,the 50^(th) dummy+18°,the 95^(th) dummy+18°,the 5^(th) dummy-18°,the 50^(th) dummy-18°and the 95^(th) dummy-18°,based on a sled collision test platform,to improve the National Standard GB 11552 of China for protecting passengers’safety.The dummy injuries were analyzed in 130 tests of 40 models,to explore the injury risk of torso and lower limbs of occupants.The results show that the dummy head injury factors are 0.66,0.69,0.73,0.95,0.90 and 0.72 in the six test conditions respectively,having a risk factor of approaching 1 for the dummy torso injury,and having some injury risk for dummy lower limbs.A greater size dummy has a greater injury risk at lower limb,with the injury risk near the impact side of lower limb is higher than that on the other side.Therefore,the authors suggest that the torso and lower limbs of a dummy should be defined appropriately in a future China National Standard GB 11552.