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3D Simulation of Warp Knitted Structures with a New Algorithm Based on NURBS

Research and development


  • Xu Hai-Yan
    College of Textiles, Dong Hua University, Shanghai, P. R. China
  • Xu Hai-Yan
    TSL School of Business and Information Technology, Quanzhou Normal University, Quanzhou Fujian, P. R. China
  • Chen Nan-Liang
    College of Textiles, Dong Hua University, Shanghai, P. R. China
  • Jiang Jin-Hua (j/w)
  • Jin Ling-Xiao (j/w)
  • Wang Ze-Xing
    College of Textiles & Fashion, Hunan Institute of Engineering, Hunan, P. R. China

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In order to obtain a three-dimensional computer simulation of warp knitted structures with more flexibility and realism, a new algorithm using Matlab was developed by NURBS based on empirical geometrical loop models. With the principles of NURBS curves, once the values of data points are known, the control points with two coincidence points at the start and end points can be uncomplicatedly calculated by Matlab. Then the NURBS curve of a single typical stitch can be simulated flexibly by Matlab. A new typical stitch selected from two stitches simulated directly by the new method is redefined to improve the joint of neighboring stitches, and it is found that there are two types of redefined typical warp knitted stitches judged by whether the two under lap on the same side or not. Based on the redefined typical warp knitted stitch, two warp knitted structures are simulated regardless of the loop offset, and all the joints of stitches are smooth.


warp knitted stitch, three-dimensional simulation, NURBS, joint of stitches, Matlab.


Xu H-Y, Chen N-L, Jiang J-H, Jin L-X, Wang Z-X. 3D Simulation of Warp Knitted Structures with a New Algorithm Based on NURBS. FIBRES & TEXTILES in Eastern Europe 2015; 23, 1(109): 57-60.

Published in issue no 1 (109) / 2015, pages 57–60.


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