北京航空航天大学学报 ›› 2000, Vol. 26 ›› Issue (2): 182-185.

• 论文 • 上一篇    下一篇

三维四向编织复合材料弹性模量数值预报

刘振国1, 陆萌1, 麦汉超1, 卢子兴1, 冯志海2   

  1. 1. 北京航空航天大学 飞行器设计与应用力学系;
    2. 中国运载火箭技术研究院 材料工艺研究所
  • 收稿日期:1998-09-15 出版日期:2000-02-29 发布日期:2010-09-27
  • 作者简介:刘振国(1962-),男,河北涞水人,副教授,100083,北京.

Numerical Prediction of Moduli of 3-D and 4-step Braided Composites

LIU Zhen-guo1, LU Meng1, MAI Han-chao1, LU Zi-xing1, FENG Zhi-hai2   

  1. 1. Beijing University of Aeronautics and Astronautics,Dept. of Flight Vehicle Design and Applied Mechanics;
    2. Aerospace Research Institute of Material and Processing Technology
  • Received:1998-09-15 Online:2000-02-29 Published:2010-09-27

摘要: 对三维四向编织复合材料的参数化建模技术进行了研究,提出了一种"米"字型枝状体胞的计算模型,较为真实地模拟了该材料的细观结构;在此基础上讨论了相应的边界条件和约束条件并应用有限元方法计算了该材料的纵向、横向弹性模量.通过与实验结果的对比可见,计算结果的预报精度较好.

Abstract: The parameterized modeling technology for three dimensionally and 4-step braided composites is studied. First, the ""-type model of a representative unit cell is presented for FEM numerical prediction, which more really simulates the inner meso-structures of the materials because of considering the interactions of them. Then, the boundary conditions and constrain conditions of the unit cell model are discussed and the longitudinal and transverse elastic moduli and Poisson-s ratio of the materials are obtained by FEM calculation. Finally, the predicted results are compared with those of experiments, and it is showed that they are in good agreement with each other.

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