An experimental investigation on workload limiting methods within ORR policies in a job shop environment

Abstract

The performances of three workload limiting policies are analysed, and the following are the three objectives: (i) assessing whether the method of workload limiting a ects the performances of Order Review and Release strategies; (ii) investigating the performances of the workload limiting methods when the mix imbalance changes; (iii) evaluating the robustness of the workload limiting methods considered. The methodological pattern followed required a simulation model of a dynamic job shop system and all the workload limiting methods are tested by resorting to a fractional factorial experimental design with repetitions. Results coming from simulation campaign show that the`upper bound only' method is the best performer. Furthermore three di erent mix imbalance levels have been tested, showing that`workload balancing' method allows closer performances to those of the`upper bound only'. Finally`workload balancing' is proven to be the most robust, but not all the results are statistically signi®cant for all performance indexes.

Deconstructing bottleneck shiftiness: the impact of bottleneck position on order release control in pure flow shops

“…For example, the release method illustrated in Figure 3 is widely applied in the Workload Control literature (e.g. Wiendahl, 1992;Cigolini & Portioli-Staudacher, 2002;Philipoom & Steele, 2011;Thürer et al, 2012). Fredendall et al (2010) showed that, in job shops with a bottleneck, controlling the workload at each station outperforms bottleneck control.…”

“…Cigolini & Portioli-Staudacher, 2002;Fredendall et al, 2010) or continuously at any moment in time (see, e.g. Fernandes & Carmo-Silva, 2011;Fernandes et al, 2014;Thürer et al, 2014b).…”

A lean-based ORR system for non-repetitive manufacturing

“…This effect, implicit in ORR systems (Melnyk and Ragatz, 1989) , 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 F o r P e e r R e v i e w O n l y seems very marked in the case of workload balancing systems. This also seems to be the finding of the paper by Cigolini and Portioli-Staudacher (2002), which compares a workload balancing system with several workload limiting systems.…”

Investigation of Effectiveness of Order Review and Release Models in Make to Order Supply Chain

“…There are three main techniques for the workload control within limited workload order release system: upper bound only [15], [23]; lower bound only [11]; upper and lower bound method [17]. In [24], the authors found out that the upper bound limiting order release system performs the best.…”