| 三维四向编织复合材料弹性性能的理论预测 |
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| 引用本文： | 杨振宇,卢子兴.三维四向编织复合材料弹性性能的理论预测[J].复合材料学报,2004,21(2):134-141. |
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| 作者姓名： | 杨振宇 卢子兴 |
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| 作者单位： | 北京航空航天大学,固体力学研究所,北京,100083 |
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| 基金项目： | 国家自然科学基金项目(10072007)资助 |
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| 摘 要： | 在对三维四步(1×1)编织物结构分析的基础上,进一步完善了基元、面元和角元的三细胞模型,使修正后的模型实现了空间上的几何连续性,较为真实地模拟了编织预制件的纤维走向。然后,基于修正后的三细胞模型并采用刚度平均法预测了三维编织复合材料的弹性性能,通过与现有实验结果的比较,验证了该模型的适用性。
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| 关 键 词： | 复合材料 三维编织 几何模型 弹性性能 刚度平均法 |
| 文章编号： | 1000-3851(2004)02-0134-08 |
| 收稿时间： | 2003-01-13 |
| 修稿时间： | 2003-04-16 |
THEORETICAL PREDICTION OF THE ELASTIC PROPERTIES OF THREE-DIMENSIONAL AND FOUR-DIRECTIONAL BRAIDED COMPOSITES |
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| YANG Zhenyu,LU Zixing.THEORETICAL PREDICTION OF THE ELASTIC PROPERTIES OF THREE-DIMENSIONAL AND FOUR-DIRECTIONAL BRAIDED COMPOSITES[J].Acta Materiae Compositae Sinica,2004,21(2):134-141. |
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| Authors: | YANG Zhenyu LU Zixing |
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| Affiliation: | Research Center of Solid Mechanics, Beijing University of Aeronautics and Astronautics, Beijing 100083,China |
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| Abstract: | On the basis of structural analysis for the three-dimensional four-step(1×1) braided composites, further improvement was made on the three-cell model which includes interior,surface and corner cells. The modified model realizes the geometric continuity of the fibers in the space, and also really simulates the moving orientation of fibers in the braided preforms. Based on this model, we predicted the elastic properties of three-dimensional and four-directional braided composites with the method of stiffness averaging. Comparison of the calculating results with the available experimental data shows the applicability of the present model. |
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| Keywords: | composites three-dimensional braiding geometric model elastic properties stiffness averaging |
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