三维五向编织复合材料弹性性能的数值预报

李典森; 刘子仙; 卢子兴

三维五向编织复合材料弹性性能的数值预报

北京航空航天大学航空科学与工程学院, 北京 100191

基金项目: 航空科学基金资助项目(04B51045); 北京市教育委员会共建资助项目(XK100060522); 北航博士创新基金资助项目

详细信息

作者简介:
李典森(1978-),男,福建建阳人,博士生,lidiansen@163.com.

中图分类号: O 34; TB 332; TB 330.1
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- 文章访问数: 4032
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- 被引次数: 0
出版历程
- 收稿日期: 2007-07-10
- 网络出版日期: 2008-08-31

Numerical prediction for the elastic properties of three dimensional and five directional braided composites

School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 基于三维五向编织复合材料细观结构模型,通过假设挤压固化后编织纱线和轴纱分别具有六边形和正方形横截面以及分析纱线之间的空间几何关系,建立了该类材料的有限元模型.并且,采用有限元方法计算得到了三维五向编织复合材料的弹性性能,分析了编织角和纤维体积含量对弹性性能的影响规律,并与三维四向编织复合材料的相应结果进行对比,同现有的实验数据进行了比较,验证了数值预测的有效性.结果表明:三维五向编织复合材料具有良好的力学性能,轴纱的加入使得轴向力学性能得以增强.
- 三维五向编织 /
- 复合材料 /
- 有限元法 /
- 弹性常数 /
- 单胞
Abstract: The finite element model is established based on the micro-structure of three dimensional and five directional braided composites and the assumption of the braiding yarn with the hexagon section and the axial yarn with the square section and the analysis of geometrical relationship of yarns in three dimensions. The elastic constants of three dimensional and five directional braided composites are calculated by the finite element method and compared with the corresponding results of three dimensional and four directional braided composites. The influences of the braiding angle and fiber volume fraction on the elastic constants are also analyzed. In addition, the predictions were compared with the experiment results which verified the validity of the finite element analysis. The results show that three dimensional and five directional braided composite has good mechanical properties and it improves the axial mechanical performance of the material by joining the axial yarns.
- three dimensional and five directional braiding /
- composite /
- finite element method /
- elastic constants /
- unit cell

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参考文献(1)

[1] Wu D L. Three-cell model and 5D braided structural composites[J]. Composites Science and Technology, 1996,56(3): 225-233 [2] 李典森,陈利,李嘉禄.三维五向编织复合材料的细观结构分析[J].天津工业大学学报, 2003,22(6):7-11 Li Diansen, Chen Li, Li Jialu. Microstructure analysis of 3-dimensional 5-directional braided composites[J]. Journal of Tianjin Polytechnic University, 2003,22(6): 7-11(in Chinese) [3] 卢子兴,刘子仙.三维五向编织复合材料的弹性性能[J].北京航空航天大学学报,2006,32(4): 455-460 Lu Zixing, Liu Zixian. Elastic properties for 3 dimensional and 5 directional braided composites[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006,32(4): 455-460(in Chinese) [4] 陈利,梁子青,马振杰,等.三维五向编织复合材料纵向性能的实验研究[J].材料工程,2005(8):3-6 Chen Li, Liang Ziqing, Ma Zhenjie,et al. Experimental investigation on longitudinal properties of 3-D 5-direction braided composites[J]. Materials Engineering, 2005(8):3-6(in Chinese) [5] 李仲平,卢子兴,冯志海,等.三维五向碳/酚醛编织复合材料的拉伸性能及破坏机理[J].航空学报,2007, 28(4):869-873 Li Zhongping, Lu Zixing, Feng Zhihai,et al.Investigation of the tensile properties and failure mechanism of integrally-braided 5D carbon/phenolic composites [J]. Acta Aeronautica et Astronautica Sinica, 2007, 28(4): 869-873(in Chinese) [6] 郑锡涛,郭稳学,盛国柱,等.三维编织复合材料力学性能试验研究王玉林.复合材料-生命、环境与高技术.天津:天津大学出版社, 2002:1108-1111 Zheng Xitao, Guo Wenxue, Sheng Guozhu, et al. An experimental investigation on the mechanical behavior of 3-D braided composites Wang Yulin. Composites-life, Environment and High Technology. Tianjin: Publishers of Tianjin University, 2002:1108-1111(in Chinese) [7] 李嘉禄,刘谦.三维编织复合材料中纤维束横截面形状的研究[J].复合材料学报, 2001, 18(2):9-13 Li Jialu, Liu Qian. Study on fiber tows cross-section in 3-D braided composites[J].Acta Materiae Compositae Sinica, 2001, 18(2):9-13(in Chinese) [8] 李典森,卢子兴,蔺晓明,等.三维四向编织复合材料弹性性能的有限元预报[J]. 北京航空航天大学学报,2006,32(17):828-832 Li Diansen, Lu Zixing, Lin Xiaoming,et al. Finite element prediction of elastic properties of three dimensional and four directional braided composites[J].Journal of Beijing University of Aeronautics and Astronautics,2006,32(17):828-832(in Chinese)

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