多层多向层联机织复合材料力学性能试验及刚度预报  

Mechanical Property Test and Stiffness Prediction of Multilayer-Multiaxial Interlock Woven Composites

作　　者：郭瑞卿 张一帆[2,3] 尹亮[1] 陈利[2,3] 李桂洋 GUO Ruiqing;ZHANG Yifan;YIN Liang;CHEN Li;LI Guiyang(Aerospace Research Institute of Materials&Technology,Beijing 100079,China;Ministry of Education Key Laboratory for Advanced Textile Composite Materials,Tiangong University,Tianjin 300387,China;School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China)

机构地区：[1]航天材料及工艺研究所,北京100079 [2]天津工业大学先进纺织复合材料教育部重点实验室,天津300387 [3]天津工业大学纺织科学与工程学院,天津300387

出　　处：《航空制造技术》2025年第6期96-103,共8页Aeronautical Manufacturing Technology

摘　　要：三维机织复合材料因结构整体性能好、层间性能优、制备成本低等突出优点,被广泛应用于航空航天、国防等重要领域。本文以一种新型三维机织结构(多层多向层联机织结构)为研究对象,开展了其复合材料在0°和90°两个方向上的拉伸及面内剪切试验,通过建立几何单胞模型,选择合理的边界条件,对该材料进行了刚度预报,并与试验结果进行对比。结果表明,0°方向拉伸弹性模量的模拟值与试验值相差1.73 GPa,90°方向拉伸弹性模量的模拟值与试验值相差1.76 GPa,两个方向的最大误差均不超过5%;面内剪切模量的模拟值与试验值相差1.47 GPa,泊松比相差0.01,基本一致;表明采用有限元法预报的弹性模量与实际的试验值吻合较好。Three-dimensional woven composites are a new-generation strategic materials that have been widely used in aerospace,national defense and other important fields due to their advantages of good overall structure performance,excellent interlayer performance and low preparation cost.The composites can be used as structural materials to bear load as well as functional materials to be applied in the abovementioned areas.Therefore,fabrication and corresponding mechanical property prediction of the composite are crucial for their future application.In this study,a new three-dimensional woven structure(multilayer-multiaxial interlock structure)was studied,tensile and in-plane shear tests of its composite material in two directions of o°and 90o were carried out.By establishing a geometric single-cell model and selecting reasonable boundary conditions,stiffness prediction was carried out and compared with the experimental results.The results show that difference between the simulated value and experimental value of modulus of elasticity in the 0°direction is 1.73 GPa,difference in the 90°direction is 1.76 GPa,and the maximum error in both directions does not exceed 5%.The difference between the simulated value and experimental value of in-plane shear modulus is 1.47 GPa and difference in Poisson's ratio is 0.01,which is basically the same.The results indicate that modulus of elasticity predicted by the finite element simulation agrees well with the actual experimental values.This study provides references in terms of preparation of three-dimensional woven composites,data and experiment support for related studies.

关 键 词：多层多向 三维机织复合材料 拉伸性能 面内剪切性能 有限元模拟 

分 类 号：TB332[一般工业技术—材料科学与工程]