现代制造工程Issue(6)：92-101,44,11.DOI:10.16731/j.cnki.1671-3133.2025.06.010
白车身碳纤维复合材料前地板铺层设计优化研究
Study on optimization of front floor paving design of carbon fiber composite material for body-in-white
摘要
Abstract
In order to achieve the precise optimization of the front floor composite layup of the body-in-white as well as the level of structural lightweighting,a multilevel combination optimization and design method based on the body-in-white is proposed,which adopts a partitioned carbon fiber composite flooring strategy to individually design the layup of the front floor of the carbon fiber composite material.A finite element model of an electric vehicle body-in-white is established to verify the correctness of the model.Through the mechanical property test of carbon fiber composite materials,the mechanical parameters of the T700/WP-R2300 resin-based fiber-reinforced materials are determined.The super-layer free size optimisation,ply block cutting and ply block size optimisation methods are used to determine the ply thickness,ply block shape and ply layer number of the carbon fiber composite front floor,and the ply lay-up sequence is adjusted through ply sequence optimisation,and is placed in the body-in-white to carry out simulation verification.The results show that the static bending stiffness and static torsional stiffness of the car-bon fiber composite front floor after paving design are 198.69％ and 153.59％ higher than those of the original steel floor,and the effect of lightweighting is remarkable.The optimized carbon fiber composite front floor reduces weight by 45.33％.At the same time,the static bending and torsional stiffness of the body-in-white are increased by 1.82％ and 1.96％ respectively,and the first-order bending and torsional frequencies are increased by 3.05％ and 3.72％ respectively,and the static stiffness and low-order modal performance are significantly enhanced.关键词
白车身静态性能/碳纤复材前地板/多层次优化方法/铺层顺序优化/轻量化设计Key words
body-in-white static performance/carbon fiber composite front floor/multilevel optimization approach/layup sequence optimization/lightweight design分类
交通运输引用本文复制引用
徐立友,何飞飞,张帅,王运玲,王鹏飞..白车身碳纤维复合材料前地板铺层设计优化研究[J].现代制造工程,2025,(6):92-101,44,11.基金项目
工业装备结构分析优化与CAE软件全国重点实验室开放基金项目(GZ2024A03-ZZU) （GZ2024A03-ZZU）
国家重点研发计划项目(2022YFD2001203) （2022YFD2001203）
河南省重点研发专项项目(241111241800) （241111241800）
"科创中原"汽车轻量化产学研协作创新基地项目(2024KCZY315) （2024KCZY315）
河南省重大科技专项项目(221100240400) （221100240400）
河南省国际科技合作培育项目(242102520003) （242102520003）
