基于Matlab的三维四步编织仿真

Simulation of Four-Step Three-Dimensional Braiding Based on Matlab

根据编织参数对四步法编织进行算法演绎,得到编织体的具体工艺参数,然后利用Matlab编写脚本追踪携纱器的运动,确定纱线运动的空间位置趋势并存储到矩阵中,编写B均匀样条曲线脚本并在CATIA软件中导入空间纱线位置点并生成样条曲线,实现三维四步法编织的仿真以及矩形编织和圆形编织建模.以4×4矩形编织、3×18圆形编织为例,对具体编织参数展开计算,对纱线轨迹算法进行优化,实现编织预制件的仿真.

The parameters of braiding preform is obtained by an algorithm deduction according to four-step three-dimensional （3-D） braiding parameters. The traces of yarn carriers can be acquired by a Matlab script. Through such a way, the space position trends of yarn movements are gained and can＇ be stored into a matrix for four-step braiding. A script of uniform rational B-spline is compiled to generate points data of yarns and then plot into splines in CATIA software. By means of that, the simulation and modelling of four-step 3-D braiding are realized. 4 × 4 rectangular braiding and 3 × 18 tubular braiding are quoted as examples to simulate braiding preforms through calculation of specific braiding parameters and optimization of the algorithm for yarn traces.