%0 Journal Article
%T 变刚度复合材料开孔板拉伸行为数值模拟及试验验证<br>Numerical simulation and experiment validation of variable stiffness composite laminates with open holes under unidirectional tension
%A 朱伟东
%A 张笑
%A 齐德胜
%A 徐强
%J 复合材料学报
%D 2018
%R 10.13801/j.cnki.fhclxb.20170612.003
%X 纤维曲线铺放是提高复合材料构件力学性能的有效方法之一。本文针对复合材料开孔板铺放轨迹进行了研究，利用B样条曲线插值拟合获取了开孔板最大主应力铺放轨迹，并通过离散网格法建立了变刚度开孔板模型，通过引入Tsai-Wu损伤失效判据以及常刚度退化准则，进行了拉伸失效数值模拟及损伤失效分析，并分别铺放了两组常刚度和变刚度开孔板试验样件，进行了拉伸对比试验。结果表明：数值模拟与实验数据吻合较好，变刚度开孔板相比常刚度开孔板，拉伸强度提升了26.92%，且两者损伤失效演化过程显著不同。 Curvilinear fiber format is one of the effective ways to improve the mechanical properties of composite components.The laying trajectories of open-hole composite laminates were investigated. B-spline interpolation was used to obtain the laying trajectory of open-hole composite laminates with the maximum principal stress. The variable stiffness open-hole composite laminate model was established by discrete grid method.The tensile failure numerical simulation and damage failure analysis were carried out by Tsai-Wu damage failure criterion and constant stiffness degradation criterion. Two sets of constant stiffness and variable stiffness open-hole composite laminates experimental specimens were placed, respectively. A tensile strength experiment was performed.The results show that the numerical simulation accurately captures the data from experiment. The tensile strength of variable stiffness open-hole composite laminates, compared with constant stiffness open-hole composite laminates, increases by 26.92%, and the damage evolution processes of both are significantly different. 国家自然科学基金（51521064；51675479；11402228）；中央高校基本科研业务费专项资金（2017FZA4002）
%K 纤维曲线铺放
%K 开孔层合板
%K 主应力
%K 损伤失效
%K 变刚度&lt
%K br&gt
%K curvilinear fiber format
%K open-hole composite laminates
%K principal stress
%K damage evolution
%K variable stiffness
%U http://fhclxb.buaa.edu.cn/CN/abstract/abstract13968.shtml