大客车正面碰撞的仿真及改进研究  

Research on Simulation and Improvement of Coach Frontal Crash

作　　者：申福林[1] 邓景涛 谢旭良[1] 孙治华[1] 

机构地区：[1]长安大学汽车学院,陕西西安710064 [2]金龙联合汽车工业(苏州)有限公司,江苏苏州215026

出　　处：《中国公路学报》2010年第5期113-118,共6页China Journal of Highway and Transport

基　　金："十一五"国家科技支撑计划项目(2009BAG13A04)

摘　　要：以某6120型大客车为研究对象,基于UG、ANSYS/LS-DYNA等仿真软件平台及有限元分析理论,建立了车身结构有限元模型。根据大客车车身结构特点,进行了初始速度为50 km.h-1的正面碰撞有限元模拟仿真研究,得到了正面碰撞的车身结构变形。针对驾驶区压溃严重,驾驶员生存空间变小的情况,对前部车身骨架及底架结构进行了一定的改进设计。仿真结果表明:改进后驾驶区的变形适度减小,质心加速度和驾驶员座椅处典型测点的加速度最大值都有所减小,改进设计取得了一定的成效;该改进方法对大客车车身结构正面碰撞的安全性设计及后续的相关研究具有参考和应用价值。Aimed at 6120 coach,based on simulation software UG,ANSYS/LS-DYNA and finite element analysis（FEA） theory,the finite element model of coach body structure was established.According to the structure features of coach body,study of frontal crash FEA simulation was carried out at the initial speed of 50 km·h-1,the frontal crash deformation characteristics of its body structure were got.Aimed at the problem that the driving zone and driver living space were compressed seriously,some improvements of the front structure and the chassis were made in design.Simulation results show that the deformation speed of the driving zone decreases,as well as maximum values of the acceleration of the coach mass center and driver＇s seat measuring points decrease.The FEA simulation method has some reference and application value for coach body structure safety design of frontal crash and the relevant further study.

关 键 词：汽车工程 大客车 有限元分析 正面碰撞 生存空间 

分 类 号：U467.13[机械工程—车辆工程]