基于C-IASI的乘用车低速正面碰撞前端结构改进设计  

Design and Improvement of Front-end Structure of Passenger Car in Low-speed Structural Frontal Crash Based on C-IASI

作　　者：施卢丹[1] 颜先华 易舒 SHI Ludan;YAN Xianhua;YI Shu(Jinhua Polytechnic,Jinhua 321007,China;ZOTYE Automobile Engineering Research Institute,Hangzhou 310018,China)

机构地区：[1]金华职业技术学院机电工程学院,浙江金华321007 [2]众泰汽车工程研究院,浙江杭州310018

出　　处：《金华职业技术学院学报》2020年第6期41-48,共8页Journal of Jinhua Polytechnic

基　　金：2018年度浙江省高校访问工程师校企合作项目(FG2018016)。

摘　　要：分析目前中国保险汽车安全指数(C-IASI)关于低速结构正面碰撞试验后车辆维修经济性的设计要求,针对某自主品牌车型在该试验中出现的纵梁结构变形导致维修费用高昂的问题,运用有限元分析技术建立整车碰撞仿真模型,提出车身结构改进设计方案,进行基于优化方案的实车试验验证。结果表明,优化设计方案能够促进吸能盒充分变形吸能,有效降低低速结构正面碰撞中车身纵梁的变形,显著提高车辆低速碰撞后的维修经济性,其评级从"较差"提升至"一般"。The design requirements of repair economy in low-speed structural frontal crash of China insurance automotive safety index were analyzed.Aiming at the high repair cost caused by the deformation of the front side rail of an independent brand vehicle in the test,the whole vehicle simulation model was established by using the FEA technology,the optimization measures of the body structure were proposed,the optimized vehicle was tested both in the virtual and actual experiments.The results show that the optimization can promote the energy-absorbing box to be fully deformed,effectively reduce the deformation of the front side rail in low-speed structural frontal crash,and significantly improve the maintenance economy of vehicles after low-speed crash.Its rating was upgraded from“Poor”to“Average”.

关 键 词：汽车工程 中国保险汽车安全指数 乘用车 低速碰撞 结构设计 

分 类 号：U467.14[机械工程—车辆工程]