承载式碳纤维缠绕内衬钢管车架轻量化设计  

Lightweight design of load-bearing frame with CFRP winding steel tube

作　　者：周琪 马其华 周天俊[1] Zhou Qi;Ma Qihua;Zhou Tianjun(School of Mechanical and Automotive Engineering,Shanghai University of Engineering and Science,Shanghai 201620,China;Key Laboratory of High Performance Fibers&Products,Ministry of Education,Donghua University,Shanghai 201620,China)

机构地区：[1]上海工程技术大学机械与汽车工程学院,上海201620 [2]东华大学高性能纤维及制品教育部重点实验室(B类),上海201620

出　　处：《现代制造工程》2020年第4期57-63,共7页Modern Manufacturing Engineering

基　　金：纤维材料改性国家重点实验室开放课题项目(KF1826);中央高校基本科研业务费专项资金资助项目(2232018A3-02)。

摘　　要：使用碳纤维增强复合材料(Carbon Fiber Reinforced Polymer,CFRP)替换原金属材料是汽车轻量化设计的新途径。对于连接要求高、空间结构复杂的车架结构采用碳纤维缠绕内衬钢管的形式来实现材料的部分替代是一种新的思路。以承载式CFRP层缠绕内衬钢管车架为研究对象,在保证车架安全性的前提下,基于HyperWorks软件的复合材料优化模块,通过自由尺寸优化、厚度参数优化和铺层顺序优化3个步骤对CFRP层进行质量寻优;考虑承载式CFRP层缠绕内衬钢管车架的制造工艺性,对CFRP层的优化结果进行调整以满足制造要求。优化后,承载式车架质量较原钢制车架质量减少了23%,且在满载弯曲、急刹车、急转弯和侧翻等极端工况下满足刚度和强度要求。Replacing the original metal material with carbon fiber reinforced polymer is a new way of automobile lightweight design.It is a new idea to use carbon fiber winding steel tube to replace part of the material of frame structure with high connection requirements and complex space structure.The load-bearing CFRP winding steel tube frame was taken as the research object.On the premise of guaranteeing the safety of the frame,based on HyperWorks software composite material optimization module,the mass of CFRP layer was optimized by free size optimization,thickness parameter optimization and laying sequence optimization steps.Considering the manufacturing process of the load-bearing CFRP winding steel tube frame,the optimization results of CFRP layer were adjusted to meet the manufacturing requirements.After optimization,the mass of the load-bearing frame reduced by 23%compared with the original steel frame,which met the stiffness and strength requirements under extreme conditions such as full load bending,braking,sudden turning and rollover.

关 键 词：承载式车架 CFRP层缠绕内衬钢管 铺层优化 轻量化 

分 类 号：U463.829[机械工程—车辆工程]