复合材料科学与工程Issue(8)：24-32,9.DOI:10.19936/j.cnki.2096-8000.20250828.004
碳纤维增强复合材料结构吸能机理及其高效建模方法研究
Investigation on the energy absorption mechanism and high-efficiency modeling method of carbon fiber reinforced composite structures
摘要
Abstract
Failure mechanisms of carbon fiber reinforced polymer(CFRP)are complex,and fine-scale simula-tions are costly with low optimization design efficiency.To improve the simulation and optimization design efficiency of energy-absorbing components of carbon fiber composite materials,CFRP thin-walled square tubes were prepared and axial compressive crushing tests were conducted.A multi-layered and refined finite element model of the axial crushing of CFRP thin-walled square tubes was established,and the experimental and simulated failure modes and energy-absorption mechanisms were analyzed.A high-fidelity and high-efficiency equivalent modeling method was proposed.The experimental results showed that the energy-absorption mechanism of the progressive crushing failure mode of the CFRP thin-walled square tube is complex,mainly including fiber fracture,delamination,and frictional dissipation.The simulation results showed that the refined finite element model can accurately modelling the progres-sive crushing failure behavior and energy dissipation of the CFRP thin-walled square tube.Plastic deformation and damage are one of the main factors of energy dissipation.Based on the progressive crushing failure mode,the pro-posed modeling method can accurately predict the energy absorption response of the CFRP thin-walled square tube.The relatively fine modeling method has increased computational efficiency by 97%.关键词
碳纤维复合材料/薄壁方管/吸能/渐进压溃/有限元模型Key words
CFRP/thin-walled tube/energy absorption/progressive crushing/FEM分类
通用工业技术引用本文复制引用
王锴,罗俊杰,姚如洋,庞通,贾晓航,余磊..碳纤维增强复合材料结构吸能机理及其高效建模方法研究[J].复合材料科学与工程,2025,(8):24-32,9.基金项目
重载快捷大功率电力机车全国重点实验室开放课题(QZKFKT 2023-010,GZKFKT 2022-013) （QZKFKT 2023-010,GZKFKT 2022-013）
