摘要
研究了行人保护小腿碰撞时,车辆前端材料的吸能性能。先对3种不同密度的泡沫和1种塑料,进行静态压溃性能试验。在此基础上,选择吸能较好的30 g/dm3的泡沫和这种塑料,在某款运动型多功能车(SUV)车上,测量了行人保护小腿碰撞试验中样件的吸能性能。结果表明:静态压溃试验中,该种塑料的整体性能优于泡沫,塑料试验的峰值载荷、平均载荷、总吸能为泡沫试验的4倍以上,塑料试验的质量比吸能也高于泡沫的。因此,在相同吸能空间条件下,采用塑料作为车辆前端吸能材料,能够降低行人小腿胫骨加速度及膝部弯曲角,因而,有利于改善行人小腿碰撞安全性。
Energy absorption performance of vehicle front-end material was studied when pedestrian legform impacts the vehicle. On foams of three different densities and one kind of plastic, static crushing performance experiment was carried out. On this basis, the density of 30 g/din3 foam and the plastic were chosen which have better energy absorption. In a certain kind of sport utility vehicle （SUV） car, energy absorption performance of the pedestrian protection test samples was measured. The results show that at the static crushing experiments, overall performance of this kind of plastic is better than that of the foam. The plastic peak load, average load, total energy absorption are increased more than 4 times the foam, and the energy absorption per mass is also higher than the foam. Therefore, under the condition of the same energy absorption space, using plastic as the vehicle front-end energy absorption material can reduce the pedestrian leg tibia acceleration and knee bend angle, in favor of the pedestrian lower legform impact safety performance.
出处
《汽车安全与节能学报》
CAS
CSCD
2014年第3期289-293,共5页
Journal of Automotive Safety and Energy
基金
浙江省汽车安全技术研究重点实验室项目(2009E10013)
关键词
汽车安全
行人保护
小腿碰撞
泡沫
塑料
静态压溃试验
automotive safety
pedestrian protection
lower legform impact
foam
plastic
static crushing tests
