复合材料科学与工程Issue(2)：52-58,7.DOI:10.19936/j.cnki.2096-8000.20240228.008
CFRP层合板双面挖补补片设计及性能分析
Design and mechanical property analysis of double-side patch repair for CFRP laminates
摘要
Abstract
Based on the three-dimensional Hashin criterion and with the help of finite element method(FEM),a two-sided patching repair model of composite laminates was established.A patching model with damaged part re-moved but without the adhesive layer is introduced.Residual strength of the mother plate with and without patch are compared,and the damage process and the best patching angle of double-sided patching repair are also obtained.The results show that the recovery rate of tensile strength with double-side patch is between 50％and 80％,which can achieve the same repair effect as that of single-sided patching through a smaller patching area,which means less damage to the main plate and more applicable scenarios.The repair effect of double-sided patching first increa-ses and then decreases with the increase of patching angle.When the patching angle is 6°,the repair effect is the best,and the strength recovery rate reaches 78％.The main plate and patch material for experimental verification are prepared from T300/7901 material.The failure load of the test specimen shows good agreement with the FEM re-sults,and the relative error is less than 15％,which can prove the correctness of the modeling.关键词
复合材料层合板/有限元分析/双面挖补/承载性能Key words
composite laminate/finite element method/double-sided patching/load-carrying performance分类
通用工业技术引用本文复制引用
张弘强,陈栋,李成..CFRP层合板双面挖补补片设计及性能分析[J].复合材料科学与工程,2024,(2):52-58,7.基金项目
国家自然科学基金(52175153) （52175153）
河南省水下智能装备重点实验室开放基金(ZT22064U) （ZT22064U）
