复杂组织多层机织物三维建模与仿真

3D MODELING AND SIMULATION OF MULTI-LAYER WOVEN FABRIC WITH COMPLEX FABRIC WEAVE

根据实际上机织造工艺参数并结合具体结构数据对三维角联锁结构、三维正交结构、三维变厚度结构、三维筒状结构这四种多层机织物结构进行建模与仿真。以纱线截面为椭圆形或圆形,纱线轨迹为三次B样条曲线,并假设纱线直径不变,确定纱线所在的位置,选取型值点,反求三次B样条曲线控制点。利用VC++编程语言调用OpenGL对三维机织物进行仿真。

The four textile structures, three-dimensional angle interlock structure, three-dimensional orthogonal structure, three-dimensional variable thickness structure and three-dimensional tubular structure were simulated, according to the parameters of weaving process and concrete structural data. The cross sections of yams were supposed as ellipse or round with constant sizes in some structure modeling, and the yam trajectories were supposed as the cubic B-spline curves. The control points to reconstruct cubic B-spline curves were reversed by selecting data points after determination of location of yam. Finally, three-dimensional woven fabric is simulated by calling the OpenGL image functions in VC＋＋ programming platform.