重型货车后下部防护装置碰撞仿真试验研究  

Experimental study on collision simulation test of rear underside protection device of heavy truck

作　　者：冯文涛[1] 冯诗源 FENG Wen-tao;FENG Shi-yuan(Department of Foreign Exchange Cooperation,Tieling Normal College,Tieling Liaoning 112601;College of Transportation,Jilin University,Changchun Jilin 130025)

机构地区：[1]铁岭师范高等专科学校对外交流合作处,辽宁铁岭112601 [2]吉林大学交通学院,吉林长春130025

出　　处：《辽宁师专学报（自然科学版）》2021年第3期52-55,共4页Journal of Liaoning Normal College(Natural Science Edition)

摘　　要：研究重型货车后下部防护装置结构对避免追尾车辆发生钻入碰撞的影响.以某品牌重型仓栅式半挂车后下部防护装置为建模依据,将横向构件截面高度分别设定为GB 11567-2017中对O_(4)类车辆要求的120mm与目前O_(4)类车辆普遍采用的140mm,利用LS-DYNA仿真软件模拟仿真碰撞过程,对比两种结构的阻挡效果.试验结果显示,当横向构件截面高度大于140mm时该车后下部防护装置满足国标要求,能够有效缓冲吸能、阻止钻入碰撞.由此得出,适当增加横向构件的宽度能够增大有效碰撞接触面积,避免追尾车辆进一步发生钻入碰撞.The paper studied on the influence of rear underside protection device structure of heavy truck on avoiding drilling collision of rear-end vehicle.Based on the rear underside protection device of some brand of heavy-duty warehouse-type semi-trailers as modelling basis,the cross-section height of the transverse component was set as 120 mm required for O_(4) vehicles in GB11567-2017 and 140 mm commonly used for O_(4) vehicles.The LS-DYNA simulation software was used to simulate the collision process and the blocking effect of the two structures were compared.The test results show that when the cross-section height of the transverse component is greater than 140 mm,the rear underside protection device of the vehicle meets the national standard requirements,which can effectively buffer energy absorption and prevent drilling collision.It is concluded that increasing the width of the transverse component appropriately can increase the effective collision contact area and avoid further drilling collision of the rear-end vehicle.

关 键 词：追尾碰撞 重型货车 后下部防护装置 LS-DYNA 

分 类 号：U491.31[交通运输工程—交通运输规划与管理]