面向新法规的的卡车驾驶室顶压性能提升  

Improvement of roof strength of truck cab based on new regulations

作　　者：朱海芸 柳青云 李奇 宋慧斌 郭瑞武 赵杨[3] ZHU Haiyun;LIU Qingyun;LI Qi;SONG Huibin;GUO Ruiwu;ZHAO Yang(Automobile Research Institute of SINOTRUK,Jinan 250000,China;Inspur Electronic Information Industry Co.,Ltd.,Jinan 250000,China;Suzhou Automobile Research Institute,Tsinghua University,Suzhou 215000,China)

机构地区：[1]中国重型汽车集团汽车研究总院,济南250000 [2]浪潮电子信息产业股份有限公司,济南250000 [3]清华大学苏州汽车研究院,苏州215000

出　　处：《汽车安全与节能学报》2024年第2期161-168,共8页Journal of Automotive Safety and Energy

基　　金：超级节能型重型载货汽车混合动力系统开发研究项目(2017YFB0103500)。

摘　　要：某重卡驾驶室在碰撞摸底试验中生存空间、顶部承载力均无法满足《商用车驾驶室乘员保护》(GB26512-2021)的要求。为了提高顶部承载力,增大乘员的头部生存空间,建立该驾驶室的侧压-顶压碰撞有限元分析(FEA)模型,并通过仿真与试验对标验证模型的有效性。根据车身框架结构能量传递和闭合腔体传力特点精准锁定A柱、后围、顶盖的薄弱部位并制定有效优化方案。结果表明:疏通A柱、顶盖和后围等关键传力路径,形成闭合腔体截面能有效提升顶部承压力,使驾驶室在满足生存空间的前提下,顶压承载力由70 kN提升至102 kN,承载性能提升了31.3%。该结构优化思路可为白车身结构设计开发提供理论指导。The survival space and top bearing capacity of a heavy truck cab in the crash test cannot meet the roof strength requirements in Protection of the Occupants of the Cab of Commercial Vehicl(GB 26512-2021).In order to improve the top bearing capacity and increase the survival space of the passengers,the finite element analysis(FEA)model of the side-top pressure impact of the cab was established,and the effectiveness of the model was verified by simulation and test benchmarking.According to the energy transmission characteristics of the body frame structure and the closed cavity,the weak parts such as A-pillar,rear wall and roof were locked accurately,and the effective optimization plan was formulated.The result shows that dredging the key force transmission paths such as the A-pillar,roof and rear wall,and forming a closed cavity section can effectively improve the roof strength,so that the top bearing capacity of the cab can be increased from 70 kN to 102 kN under the premise of satisfying survival space,the carrying capacity has increased by 31.3%.The structural optimization idea can provide theoretical guidance for the design and development of body structure.

关 键 词：商用车驾驶室 顶部强度 结构优化 有限元分析(FEA)模型 

分 类 号：U463.83[机械工程—车辆工程]