摘要
以国产大丝束碳纤维复合材料预浸料为原材料制备了开孔拉伸及开孔压缩力学性能研究试样,然后对其开孔拉伸及开孔压缩力学性能进行力学试验研究和失效模拟研究。由开孔拉伸试验和开孔压缩试验的典型力—位移曲线与仿真结果的对比发现:在线性阶段仿真曲线与试验曲线吻合较好,且开孔拉伸破坏应力和位移的试验与模拟值吻合度很好;对开孔拉伸强度、位移的预测误差分别为0.69%和6.79%,而开孔压缩仿真结果误差相对较大,其中开孔压缩强度、位移的预测误差分别为12.20%和12.93%,均超过了10%。开孔拉伸及开孔压缩的实际失效状态与仿真预测状态基本一致,基于此深入揭示了国产大丝束碳纤维复合材料预浸料的复合材料开孔失效过程,为国产大丝束碳纤维复合材料的应用研究提供了理论基础和应用基础。
The open-hole tensile and open-hole compression mechanical properties samples of the domestic large bundle carbon fiber composite prepreg were prepared as raw materials.Mechanical experimental studies and failure simulation studies were then carried out on the open-hole tensile and open-hole compression mechanical properties.The typical force-displacement curves of the open-hole tensile test and the open-hole compression test with the simulation results reveal that the simulation curves are in good agreement with the test curves in the linear phase.The test and simulation values of the destructive stress and displacement of the open-hole tensile are found to be in close agreement.The prediction errors of the strength and displacement of the open-hole tensile are determined to be 0.69% and 6.79%,respectively.In contrast,the simulation results of the open-hole compression exhibit comparatively large errors,with the prediction errors of the strength and displacement of the open-hole compression determined to be 12.20% and 12.93%,respectively,these errors are both more than 10%.The failure states observed in experiments involving open-hole stretching and open-hole compression are largely consistent with the simulation predictions,so it provided a theoretical and practical foundation for the research and development of domestic large bundle carbon fiber composites.
作者
陈正国
刘鑫岑
吕玥蒽
CHEN Zheng-guo;LIU Xin-cen;LYU Yue-en(Shanghai Carbon Fiber Composite Materials Innovation Research Institute Co.,Ltd.,Shanghai 201512,China)
出处
《合成纤维》
2025年第6期59-64,共6页
Synthetic Fiber in China
基金
上海市科学技术委员会科研计划项目(22511102403)。
关键词
大丝束碳纤维
复合材料
力学性能
渐进损伤
失效行为
large bundle carbon fiber
composites
mechanical property
progressive damage
failure behavior
