| 三维四向编织复合材料弹性模量数值预报 |
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| 引用本文： | 刘振国,陆萌,麦汉超,卢子兴,冯志海.三维四向编织复合材料弹性模量数值预报[J].北京航空航天大学学报,2000,26(2):182-185. |
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| 作者姓名： | 刘振国 陆萌 麦汉超 卢子兴 冯志海 |
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| 作者单位： | [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 |
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| 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.
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| 关 键 词： | 纤维增强复合材料 弹性模量 数值模拟 编织 三维分析 |
| 文章编号： | ： |
| 收稿时间： | 1998-09-15 |
Numerical Prediction of Moduli of 3-D and 4-step Braided Composites |
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| LIU Zhen-guo,LU Meng,MAI Han-chao,LU Zi-xing,FENG Zhi-hai.Numerical Prediction of Moduli of 3-D and 4-step Braided Composites[J].Journal of Beijing University of Aeronautics and Astronautics,2000,26(2):182-185. |
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| Authors: | LIU Zhen-guo LU Meng MAI Han-chao LU Zi-xing FENG Zhi-hai |
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| Institution: | 1. Beijing University of Aeronautics and Astronautics,Dept. of Flight Vehicle Design and Applied Mechanics;
2. Aerospace Research Institute of Material and Processing Technology |
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| 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 Poissons 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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| Keywords: | fiber reinforced composites modulus of elasticity numerical simulation braids three dimensional analysis |
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