摘要
针对碳纤维/环氧树脂(Carbon fiber reinforced epoxy resin,CF/EP)拉扭多耦合效应层合板湿热稳定机制不明、耦合效应不强的问题,开展碳纤维/环氧树脂拉扭多耦合效应层合板设计与试验验证研究。引入复合材料层合板的几何因子,推导了拉扭多耦合效应层合板湿热稳定条件。基于湿热稳定条件,建立了拉扭多耦合效应层合板的非对称铺层优化设计模型,利用遗传算法-序列二次规划(Genetic algorithm-sequential quadratic program,GA-SQP)混合优化算法求解得到了拉扭耦合效应最大的层合板的铺层角度规律。基于三维数字图像相关方法 (Three-dimension digital image correlation,3D-DIC)完成了层合板拉扭耦合效应的测量试验。数值仿真和试验结果表明,当拉扭多耦合效应层合板的铺层角度满足其湿热稳定条件时,层合板不会发生固化变形;多耦合效应的引入能够显著提升层合板的拉扭耦合效应,最大可达30%以上。
In order to reveal the mechanism of hygro-thermal stability and solve the problem of insufficient coupling effect,the design and experimental verification of carbon fiber/epoxy resin(CF/EP)multi-coupled laminates with extension-twisting coupling effect were carried out.The geometric factors of the laminates were introduced,and the conditions for hygro-thermal stability of the multi-coupled laminates with extension-twisting coupling effect were deduced.Based on these conditions,the optimal design model of multi-coupled laminates with extension-twisting coupling effect was established.Genetic algorithm-sequential quadratic program(GA-SQP)hybrid optimization algorithm was used to optimize the stacking sequence of the laminates with the maximum extensiontwisting coupling effect.Based on three-dimension digital image correlation(3D-DIC),the extension-twisting coupling effect of the laminates was measured.The numerical simulation and experimental results show that the multicoupled laminates with extension-twisting effect will not undergo curing deformation when the stacking sequences meet the conditions of hygro-thermal stability.The introduction of multi-coupling effects can significantly improve the extension-twisting coupling effect of laminates and maximum increase is over 30%.
作者
崔达
张鸣昊
李道奎
CUI Da;ZHANG Minghao;LI Daokui(College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China;School of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China;Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions,Changsha 410073,China)
出处
《复合材料学报》
北大核心
2025年第4期2257-2269,共13页
Acta Materiae Compositae Sinica
基金
国家自然科学基金(12302197)
国防科技大学青年自主创新科学基金项目(ZK2023-38)。
关键词
湿热稳定
拉扭多耦合效应层合板
优化设计
试验验证
几何因子
鲁棒性分析
hygro-thermal stability
multi-coupled laminates with extension-twisting coupling effect
optimization design
experimental verification
geometrical factor
robust analysis
作者简介
通信作者:李道奎,博士,教授,博士生导师,研究方向为航天结构分析与设计、复合材料结构力学,E-mail:lidaokui@nudt.edu.cn。
