基于TexGen的经编针织物的三维仿真

3-D simulation of warp-knitted structure based on TexGen

针对经编针织物复杂的三维仿真问题,采用TexGen软件对经编针织物进行三维仿真。基于TexGen的建模原理,先确定最小重复单元线圈上的数个节点,通过样条插值的方法获得纱线长度方向的三维中心线,然后通过扫掠二维的横截面,再经过重复最小单元的方法获得经编针织物中纱线的三维几何模型。结果表明,由TexGen对经编针织物进行三维模拟的方法简单可行,模拟得到的效果图中线圈过渡平滑,线圈间的连接较平滑,可达到比较理想的仿真效果。

In view of the complex 3-D simulation of warp knitted fabric,the software of TexGen,mainly used for 3-D simulation of woven fabric,is used to solve the problem. Based on the geometric modeling of TexGen,firstly,the yarn’s 3-D centerline is described by specifying a number of discrete positions along the yarn length of the unit cell. Secondly,interpolating is performed between these points. Thirdly the surface of the yarn is defined by sweeping a simple two dimensional shape along the length of the yarn,and finally,the unit cell is repeated to form the 3-D warp knitted fabric. The results show that Tex Gen is simple and workable to simulate the warp knitted fabric in 3-D,and as shown in the simulated graphics of warp knitted fabrics,the loops and the links between loops are smooth,which gives a good simulation.