某商用车驾驶室结构碰撞仿真与优化研究  

RESEARCH ON COLLISION SIMULATION AND OPTIMIZATION OF CAB STRUCTURE OF A COMMERCIAL VEHICLE

作　　者：林长波 李东海 邓聚才 许恩永 何水龙 LIN ChangBo;LI DongHai;DENG JuCai;XU EnYong;HE ShuiLong(Dongfeng Liuzhou Motor Co.,Ltd.,Liuzhou 545005,China;School of Mechanical and Electrical Engineering,Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]东风柳州汽车有限公司,柳州544005 [2]桂林电子科技大学机电工程学院,桂林541004

出　　处：《机械强度》2024年第2期381-387,共7页Journal of Mechanical Strength

基　　金：广西创新驱动发展科技重大专项(AA22068001,AA23062031);广西重点研发计划(AB21196029);柳州市科技计划项目(2022AAA0102)资助。

摘　　要：为全面提升商用车碰撞安全性能,保障驾驶室乘员的人身安全,在新旧标准更替之际,以国产某型通过GB 26512—2011标准的某型载货车为研究对象,引入GB 26512—2021标准新增的正面A柱摆锤撞击试验和顶部强度试验。在Hypermesh中建立驾驶室碰撞仿真模型,并通过实车正面碰撞试验从而验证有限元模型的精确性。针对在顶部强度试验中出现车身门窗上边缘侵入假人头部现象,将结构灵敏度分析与传力路径相结合进行优化,提出驾驶室结构的改进优化方案,并通过实车碰撞验证仿真结果。结果表明,优化后的驾驶室结构,具有足够的生存空间,符合新国家标准的碰撞要求。In order to comprehensively improve the commercial vehicle collision performance and protect the personal safety,at the time of standards change,a certain type of truck that passed GB 26512—2011 was taken as the research object,the frontal A⁃pillar pendulum impact test and top strength test added by GB 26512—2021 standard were taken as the object of investigation.The cab collision simulation model was established in Hypermesh,and the accuracy of the finite element model was verified through the real vehicle frontal collision test.In view of the intrusion in the top strength test,the structural sensitivity and force transmission path were combined to optimize,and the corresponding structural optimization scheme was proposed.The results show that the optimized cab structure has enough living space and meets the collision requirements of the new national standard.

关 键 词：商用车 碰撞安全性 有限元分析 结构优化 

分 类 号：U464[机械工程—车辆工程]