二维二轴编织铺层复合材料细观几何模型及拉伸模量的一种计算方法

玻璃钢/复合材料 ›› 2017, Vol. 0 ›› Issue (1): 80-85.

二维二轴编织铺层复合材料细观几何模型及拉伸模量的一种计算方法

柯常宜^1,2, 覃小红^1,2, 阎建华^3*

1.东华大学纺织面料技术教育部重点实验室,上海201620;
2.东华大学纺织学院,上海201620;
3.东华大学研究院,上海201620

收稿日期:2016-09-13 出版日期:2017-01-28 发布日期:2017-01-28
通讯作者: 阎建华(1956-),男,博士生导师,主要从事编织复合材料研究,jh_yan@dhu.edu.cn。
作者简介:柯常宜(1990-),男,硕士研究生,主要从事编织复合材料研究。
基金资助:
上海市科委科技攻关计划项目(12521102400)

MULTILAYER 2D BIAXIAL BRAIDED LAYER COMPOSITE MESOSCOPIC GEOMETRICAL MODEL AND A CALCULATION METHOD OF THE TENSILE MODULUS

KE Chang-yi^1,2, QIN Xiao-hong^1,2, YAN Jian-hua^3*

1.Key Lab of Textile Science&Technology, Ministry of Education, Donghua University, Shanghai 201620;
2.College of Textiles, Donghua University, Shanghai 201620;
3.Research Institute of Donghua University, Shanghai 201620, China

Received:2016-09-13 Online:2017-01-28 Published:2017-01-28

摘要/Abstract

摘要： 建立了一套工程实用的二维二轴2×2编织结构的单层和多层的细观几何模型及拉伸模量的计算方法,分析复合材料的细观结构特征,考虑了编织纱束的实际横截面形态和屈曲起伏,还有实际编织工艺和成型固化,提出了单层和多层结构复合材料的细观几何模型,基于细观分析,建立了单层和多层二维二轴编织铺层复合材料等效力学模型和拉伸模量的计算方法,最终计算数值结果趋势上与实际情况一致,在具体数值上吻合度很好,表明该方法实际有效可行。结论表明,建立的细观几何模型能很好地表达单层和多层二维二轴2×2编织复合材料的结构特征,等效力学模型能够很好地反映复合材料的拉伸行为,建立的拉伸模量预测方法能够很好地导出拉伸模量。

关键词: 二维二轴编织, 细观几何模型, 等效力学模型, 拉伸模量

Abstract: In this paper, a reasonable and effective mesoscopic geometrical model for 2×2 biaxial braided composite structure, and a calculation method for tensile modulus were eatablished. The geometrical model, which applys to single or multi-layer composites, was based on the practical factors such as cross-sectional performance, buckling of braided yarn bundle, actual weaving process and forming solidification. The calculation method of tensile modulus was also established, the simulation results are tend to be consistent with the actual numerical results, which proved the effectiveness of established model. The results show that the method is effective and feasible. The above results show that the meso-geometric model fit the structural characteristics of the monolayer and multi-layer 2×2 braided composites structure well. The equivalent mechanical model can reflect the tensile behavior of the composites and the tensile modulus can be accurately predicted.

Key words: 2D biaxial braiding, mesoscopic geometrical model, equivalent mechanical model, tensile modulus

中图分类号:

TB332

柯常宜, 覃小红, 阎建华. 二维二轴编织铺层复合材料细观几何模型及拉伸模量的一种计算方法[J]. 玻璃钢/复合材料, 2017, 0(1): 80-85.

KE Chang-yi, QIN Xiao-hong, YAN Jian-hua. MULTILAYER 2D BIAXIAL BRAIDED LAYER COMPOSITE MESOSCOPIC GEOMETRICAL MODEL AND A CALCULATION METHOD OF THE TENSILE MODULUS[J]. Fiber Reinforced Plastics/Composites, 2017, 0(1): 80-85.

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