基于汽车内饰用三梳经编织物3D模型的构建

Construction of the 3D Model of Three-guide Bar Warp-knitted Fabric for Automotive Interiors Use

针对复杂的三梳栉经编织物,文章采用Rhino建模软件对其几何结构进行3D建模。首先,基于NURBS曲线对三梳经编织物线圈部分和延长线部分分别建模,通过确定曲线控制点拟合得到精度较高的空间纱线中心曲线;其次,根据纱线直径通过扫掠完成各组线圈单胞模型的3D建模,并组装得到完整的织物模型;最后,根据织物的线圈轨迹,拟合得到经编织物的曲线方程,使得线圈轨迹数值化。结果表明,采用Rhino对经编织物进行三维仿真,方法简单可行,模拟得到的效果图线圈嵌套紧密且相互之间并无干涉,可以达到较好的织物效果。

For the complex three-guide bar warp-knitted fabric,the Rhino modeling software was used for 3D modeling of geometry of warp-knited fabrics.Firstly,based on the principle of NURBS curve,the overlap and underlap of the three-guide bar warp knitted fabric were modeled separately,and the yarn center curve with high spatial position accuracy was obtained by determining the curve control point fiting.Secondly,the 3D modeling of each group of loop unit cell model was scanned according to the yarn diameter,and the complete fabric model was assembled.Finally,according to the loop trajectory of the fabric,the curve equations for the warp-knitted fabric were obtained.The results show that it is simple and feasible to use Rhino modeling software to construct the 3D model of warp knitted fabric,and the loops are tightly intermeshed and do not interfere with each other,which can achieve a good fabric effect.