提高车辆小偏置碰撞安全性的A柱结构研究  

Research on the A-Pillar Structure to Improve the Safety of Automobile Small Offset Collision

作　　者：刘多加 钱梅林 陈海琴 李灿 赵坤民 Liu Duojia;Qian Meilin;Chen Haiqin;Li Can;Zhao Kunmin(Hozon New Energy Automobile Co.,Ltd.,Jiaxing 318000;Dalian University of Technology,Dalian 116024)

机构地区：[1]合众新能源汽车股份有限公司,嘉兴318000 [2]大连理工大学,大连116024

出　　处：《汽车工艺与材料》2024年第8期1-6,共6页Automobile Technology & Material

基　　金：国家自然科学基金项目(51775160)。

摘　　要：基于中国保险汽车安全指数25%偏置碰撞工况,对某新能源汽车A柱的结构设计方案进行了研究。对比分析了基础结构、复合车身解决方案(Composite Body Solutions,CBS)胶块增强结构、热气胀形管梁增强结构对碰撞安全性的影响,介绍了CBS胶块和热气胀形的制造工艺,并对热气胀形工艺进行了仿真分析,对比分析2种增强结构的工装投入和单件成本。研究发现,在均能实现小偏置碰撞安全性优秀等级的前提下,1500 MPa热气胀管梁方案在单件成本及轻量化方面比CBS胶块方案更具优势。Based on the 25%offset collision condition defined by the China Insurance Research Institute,this paper studies the structural design scheme of the A-pillar of a new energy vehicle.The effect on the crash safety of the basic structure,CBS rubber block reinforced structure,and hot blow forming tube reinforced structure are evaluated and compared.The manufacturing process of CBS rubber block and tube hot blow forming are introduced,and the hot blow forming process is simulated and analyzed.The tooling capital investment and unit cost of the two reinforced structures are further analyzed.The study shows that in the case of achieving an excellent level of small offset collision safety,the 1500 MPa tube hot blow forming scheme has more advantages than the CBS rubber block scheme in terms of unit cost and light weight.

关 键 词：碰撞安全性 小偏置碰 车身A柱 热气胀形 CBS胶块 

分 类 号：TH162[机械工程—机械制造及自动化]