三维方型编织预制件的纱线编织结构

详细信息

YARN ARCHITECTURE OF 3-D RECTANGULAR BRAIDED PREFORMS

Textile Composites Research Center, Tianjin Institute of Textile Science and Technology, Tianjin 300160, China

摘要

摘要: 主要研究了四步法1×1 编织预制件的纱线编织结构。采用控制体积单元法和实验观察相结合的方法, 根据携纱器的编织运动规律, 将预制件分为三个区域, 识别了局部单胞模型。在椭圆形横截面假设的基础上, 考虑了编织纱线的填充因子, 建立了编织工艺参数之间的关系。
- 三维编织 /
- 预制件 /
- 纱线编织结构
Abstract: The yarn architecture of three dimensional (3 D) braided preforms produced by the four step 1×1 braiding technique has been studied by means of a control volume method in conjunction with experimental investigation. According to the movement traces of yarn carriers on the braiding machine bed, a preform was divided into three regions, i.e. interior, surface and corner, and four kinds of local unit cells were identified for it. Based on the assumption of the braiding yarns with the elliptical cross section and the introduction of the yarn packing factor, the relations between the braiding parameters were derived. Finally, the predictions of the thickness and the fiber volume fraction of preforms have shown good agreement with experimental results.
- D braiding /
- preform /
- yarn architecture