Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (06): 69-75.doi: 10.13475/j.fzxb.20190604907

• Textile Engineering • Previous Articles     Next Articles

Three-dimensional simulation of multiple high-low loop tufting carpet based on Rhino-Python

DAI Zhenxing, CHEN Guangfeng(), CHEN Ge   

  1. College of Mechanical Engineering, Donghua University, Shanghai 201620, China
  • Received:2019-06-24 Revised:2020-02-19 Online:2020-06-15 Published:2020-06-28
  • Contact: CHEN Guangfeng E-mail:chengf@dhu.edu.cn

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Abstract:

In order to solve the problem that the multiple high-low loop tufting carpet with complex spatial structure lacks realism when realizing the three-dimensional simulation of its appearance, PythonScript under Rhino environment was used to realize the three-dimensional simulation of the appearance of tufted carpet. By segmenting the loop centerline and section curve, the relevant control point coordinates were locally solved, and then the two were fitted by the B-spline curve. At the same time, considering the mutual squeezing of the carpet loops, the loops were randomly deflected and deformed, and the state after the loops were deformation was simulated by a design algorithm. On this basis, the loop surface texture and lighting model were added to further render and output the simulation results. The test results show that the three-dimensional simulation method of tufted carpet using the B-spline curve fitting principle and the Rhino-Python platform is feasible and easy to implement. Compared with actual carpet samples, it can more realistically simulate tufted carpets with various flower patterns and loop height changes under different yarn arrangements.

Key words: tufted carpet, three-dimensional simulation, carpet loop, B-spline curve, Rhino-Python, geometric modeling

CLC Number: 

  • TS186.9

Fig.1

Schematic diagram of basic structure of tufted carpet"

Fig.2

3-D simulation flow chart of tufted carpet"

Fig.3

Principle of quadratic B-spline curve fitting"

Fig.4

Quadratic B-spline fitting of center-line of the loop"

Tab.1

Coordinates of center-line control point of loop at loop height of 9 mmmm"

控制点序号 x坐标 y坐标 z坐标
0 0.530 0 0
1 1.141 1.881 0
2 0.611 3.935 0
3 0 6.870 0
4 0.815 8.545 0
5 1.630 9.000 0
6 2.445 8.545 0
7 3.260 6.870 0
8 3.668 3.935 0
9 2.119 1.881 0
10 2.730 0 0

Fig.5

Establishing center line model of loop in Rhino"

Fig.6

Loop's cross section in Rhino"

Fig.7

Geometric model with loop'height of 8 mm(left) and 10 mm(right)"

Fig.8

Deflecting and deforming about spatial position of loop"

Fig.9

Effect of loops deflecting simulation"

Fig.10

Tufted carpet appearance overall simulation program framework"

Fig.11

Comparison between tufted carpet appearance simulation and product."

Fig.12

Overall appearance simulation of tufted carpets with different patterns. (a) Pattern of "DHU";(b) Pattern of wave; (c) Pattern of hound's-tooth; (d) Pattern of Twill"

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