经编组织三维仿真中的线圈偏移

Loop offset of warp-knitted structures in 3-D simulation

为了采用计算机技术更真实地模拟经编组织中线圈的形态结构,通过观察各种经编针织物的线圈结构,分析由纱线张力所引起的线圈偏移规律,得出了线圈偏移理论和计算公式。该理论假设同一枚针上的线圈偏移量是该针上所有线圈偏移量的累加值。结合此偏移理论,在已建立的经编线圈三维模型的基础上,修正了定义线圈三维结构的部分控制点坐标。最后结合Visual C++.NET编程语言和OpenGL工具,成功实现了各类单针床经编针织物的计算机三维仿真。仿真图片与真实织物对比,在形态结构上具有较高的相似度。

In order to simulate the loop construction of warp-knitted structures more truly with computer technology,loop offset theory and calculation formula are derived after observing the loop construction of all kinds of warp-knitted fabrics and analyzing the regulation of loop offset caused by yarn tension.The theory assumes that offset is the accumulated value of each loop offset in the same needle.Applying the theory to the three-dimension model of warp-knitted loop,the coordinates of some control points defining the loop are amended.Finally,computer 3-D simulation of tricot warp-knitted fabrics is successfully realized with the program language Visual C＋＋.NET and the tool of OpenGL. Comparing the simulated images with the real fabrics,it is found that there is high similarity on fabric construction between them.