关于制作复杂纬编针织物结构模型的基础研究 第二部分：歪斜平纹织物的几何模型 毕业论文外文资料翻译.doc

basic studies for modeling complex weft knitted fabric structures part ii: a geometrical model for plain knitted fabric spiralitya model for the spirality of plain knitted fabrics with compressible yarns is given here by modifying kurbaks (1998) plain knitted loop model. the proposed model is thought to be applicable not only to the spirality of classical textiles, but also to modeling small diameter tubular technical textile fabrics. in the present study, it is suggested that because of the three-dimensional nature of the plain loop, the yarn part at the left arm of the loop and the yarn part at the right arm of the loop have torsions in opposite directions, so that if the yarn used is already twist lively, this potential twist applies in the same direction for both of the arms. therefore, the total twist decreases in one arm and increases in the other. to equalize their total twists, the curves of the yarn axis in the arms differ from each other (the elliptical cylinders on which the yarn arms wrapped differ in length and in radius). the upper and lower parts of the loop adjust themselves by transforming into parametric elliptical shapes from their original elliptical shapes. there is another method of twist redistribution in the fabrics, which is to differentiate the wrapping angles of the helices on two arms of a loop. this is defined as the second kind of spirality and is mainly seen in m x n rib structures as well as in some of the technical textile plain knitted fabrics. this second kind of spirality is not considered during the creation of the model, but a discussion is given on this subject at the end of the work.关于制作复杂纬编针织物结构模型的基础研究 第二部分：歪斜平纹织物的几何模型这里给出一个通过修改kurbak（1998）平纹针织线圈而得到的带有可压缩纱的歪斜织物模型。该模型被认为是不仅适用于古典纺织品的歪斜，而且适用于小直径管技术的纺织面料。目前的研究表明，由于平纹线圈的三维特性，在左边的循环纱线和在右边的循环纱线部分有相反的扭转方向，然而，如果使用的纱线已经扭曲，这种潜在的扭曲在织物两边将有相同的方向。因此，总的扭曲在一边减少而在另一边就会增加。为了平衡总的扭曲量，两边纱轴的转曲方向应该互补相同（在椭圆的锡林上预装着不同长度、不同半径的沙臂）。线圈的上部和下部可以通过改变椭圆的原