Micro-structural analysis of three dimensional braided composites with profiled section
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摘要: 阐述了异型截面三维编织物编织的基本原理,以"口"字型截面为例,系统地分析了携纱器在机器底盘上的运动规律以及纱线在面内和空间的交织运动规律.采用控制体积单元法建立了异型截面三维编织复合材料中除普通方型三维编织复合材料所具有的内胞、面胞和角胞外,在矩形与矩形相连区域的相连内部单胞、相连表面单胞和相连角单胞模型.这些单胞模型的表面与预制件的表面平行,有利于今后的力学性能分析.此外,在假设纱线具有椭圆形横截面的基础上,推导了编织工艺参数之间的数学关系,为进一步分析异型截面三维编织复合材料的力学性能奠定了基础.Abstract: The fundamental theory of braiding process of three dimensional braided preform with profiled section was described. The movement rules of the carriers in the machine plane and the planar and spatial yarns paths were analyzed systematically based on the preform with square section. The unit models in the joint rectangle region of interior, surface, and corner of three dimensional braided composites with profiled section were established besides the unit model of interior, surface, and corner of three dimensional rectangular braided composites by means of a control volume method. The surface of these models is parallel to the surface of perform, which is suitable for the analysis of the mechanical properties. In addition, the math relationship between braiding parameters was deduced on the hypothesis of the yarns with the elliptical cross-section. It would be a solid base for the analysis of the properties of three dimensional braided composites with profiled section.
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Key words:
- microstructure /
- composites /
- 3D braiding /
- profiled section /
- unit cell model
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[1] Ko F K. Three-dimensional fabrics for composites:an introduction to the magna weave structure Composite Material. Tokyo:Japan Soc for Composite Materials, 1982:1609 [2] Yang J M, Ma C L, Chou T W. Fiber in clination model of three-dimensional textile structural composites[J].Journal of Composite Materials,1986,20(9):472-484 [3] Li W, Hammand M, EI-Shiekh A. Structural analysis of 3-D braided performs for composites [J]. J Text Inst, 1990, 81(4):491-514 [4] Du Guangwu, Ko F K. Unit cell geometry of 3D braided structures[J]. Journal of Reinforced Plastics and Composites, 1993,12(7):752-768 [5] Chen Li, Tao X M, Choy C L. On the microstructure of three-dimensional braided performs[J]. Composites Science and technology, 1999, 59(3):391-404 [6] 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) [7] 李典森, 卢子兴,陈利,等. 三维七向编织结构细观分析[J]. 复合材料学报,2006,23(1):135-141 Li Diansen, Lu Zixing, Chen Li, et al.Microstructure analysis of 3-dimensional 7-directional braided structure[J]. Acta Materiae Compositae Sinica, 2006,23(1):135-141(in Chinese) [8] 李泽宏,顾伯洪,丁辛.矩形及其组合横截面立体编织物四步法编织纱线运动模拟[J].东华大学学报,2002,28(2):71-76 Li Zehong, Gu Bohong, Ding Xin.Computer simulation of Yarns′ movement in 4-step rectangular cross-sectional braided process[J]. Journal of Dong Hua University,2002,28(2):71-76(in Chinese) -
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