面向行人安全的保险杠结构改进优化OA北大核心CSCDCSTPCD
Bumper structure optimization for pedestrian leg protection
针对行人下肢的碰撞保护,建立了某车型的有限元碰撞模型并进行了试验验证.为改善行人保护性能,提出了添加吸能泡沫及副保险杠的改进方案.以吸能泡沫厚度、主副保险杠垂向距离、副保险杠壁厚这3个结构参数为设计变量,构造了优化的拉丁超立方试验,结合最小二乘法建立胫骨加速度、膝关节弯曲角度及剪切位移3个伤害指标的响应面模型,运用多目标遗传算法进行优化求解.对比结果表明,优化后的结构有效地降低了行人腿部受到的伤害,满足了安全法规要求.
A finite element collision model was established to simulate the collision between pedestrian's lower leg and a car,and it was verified through experiment.In order to improve the performance of pedestrian protection,auxiliary bumper and energy-absorption foam were added in the car.With taking the thickness of energy-absorption foam,the vertical distance between bumper and auxiliary bumper and the thickness of auxiliary bumper as design variables,an optimized…查看全部>>
徐中明;吕伟东;夏小均;赖诗洋;张志飞
重庆大学机械传动国家重点实验室,重庆400044重庆大学汽车工程学院,重庆400044重庆大学汽车工程学院,重庆400044重庆大学汽车工程学院,重庆400044重庆大学汽车工程学院,重庆400044
交通工程
行人安全保险杠拉丁超立方多目标遗传算法
pedestrian safetyautomobile bumperLatin hypercubeMOGA
《重庆大学学报》 2017 (4)
1-8,8
中央高校基本科研业务费科研专项(CDJZR14115501).Supported by Fundamental Research Funds for the Central Universities(CDJZR14115501).
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