
Fig. 1.
Steps in a simulation study [16]

Fig 2.
Workflow (a) with thread cleaning operation and (b) without thread cleaning operation

Fig. 3.
Theoretical distribution
Table 1.
Statistical distribution of operations in the system with thread cleaning
| Operation Title | Distribution |
|---|---|
| Front & Back Joining | 0.34 + ERLA(0.0277, 11) |
| Collar Stitch | 0.34 + 0.27 * BETA(1.97, 2.26) |
| Collar Joining | 0.69 + 0.75 * BETA(3.13, 3.93) |
| Sleeve Joining | 0.48 + ERLA(0.0917,4) |
| Sleeve Stitch | 0.34 + 0.57 * BETA(3.5, 3.97) |
| Side Seam | 0.57 + ERLA(0.0746,6) |
| Cuff Stitch | 0.4 + LOGN(0.493, 0.172) |
| Hem Stitch | 0.41 + WEIB(0.835, 2.41) |
Table 2.
Statistical distribution of operations in the system without thread cleaning
| Operation Title | Distribution |
|---|---|
| Front & Back Joining | 0.36 + LOGN(0.252, 0.113) |
| Collar Stitch | 0.34 + 0.27 * BETA(1.97, 2.26) |
| Collar Joining | 0.32 + LOGN(0.703, 0.25) |
| Sleeve Joining | 0.3 + 2.02 * BETA(6.12, 17.1) |
| Sleeve Stitch | 0.34 + 0.57 * BETA(3.5, 3.97) |
| Side Seam | 0.39 + LOGN(0.547, 0.195) |
| Cuff Stitch | 0.4 + LOGN(0.493, 0.172) |
| Hem Stitch | 0.21 + LOGN(0.543, 0.172) |
| Bottom Hemming | 0.29 + 0.53 * BETA(5.28, 7.93) |

Fig. 4.
ARENA 14 simulation programme model

Fig. 5.
Validity of the model without thread cleaning

Fig. 6.
Validity of the model with thread cleaning

Fig. 7.
Turtle algorithm
