针对细编穿刺织物,采用具有参数连续性的样条线作为纤维丝束的轨迹特性函数,建立了三维立体织物结构的数学抽象与三维建模方法.基于MicroCT方法实际测量的细编穿刺织物结构特征参数,采用四种丝束轨迹特性函数和两种丝束截面建立了八种穿刺织物结构的三维数字模型,通过丝束结构与孔隙率的对比,三维数字模型与织物真实结构符合较好.该织物结构数学抽象与三维建模方法,可用于小尺度的亚单胞模型与大尺度的宏观模型分析,具有较高的适应性.
A mathematical abstraction and three-dimensional modeling method of three-dimensional woven fabric structure was developed for the fine weave pierced fabric, taking parametric continuity splines as the track function of tow.Based on the significant parameters of fine weave pierced fabric measured by MicroCT, eight kinds of the three-dimensional digital models of the fabric structure were established with two kinds of tow sections and four kinds of tow trajectory characteristic functions.There is a good agreement between the three-dimensional digital models and real fabric by comparing their structures and porosities.This mathematical abstraction and three-dimensional modeling method can be applied in micro models for sub unit cell and macro models for macroscopic scale fabrics, with high adaptability.
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