Minimizing the makespan for the two-machine flow shop scheduling problem with random breakdown

Faicel Hnaien () and Taha Arbaoui ()
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Faicel Hnaien: University of Technology of Troyes
Taha Arbaoui: University of Technology of Troyes

Annals of Operations Research, 2023, vol. 328, issue 2, No 11, 1437-1460

Abstract: Abstract This paper studies a two-machine flow shop scheduling problem with availability constraints due to a breakdown on the first machine. The starting time of the breakdown is considered stochastic and follows a known probability distribution. A service-level constraint is introduced to model the guarantee with which the obtained schedule takes into account the stochastic nature of the breakdown’s starting time. The objective is to find a solution that minimizes the makespan while satisfying the desired service level. The studied problem is strongly NP-hard. We develop two mixed integer linear models that linearize the non-linear model. Using interval modeling of the breakdown, we propose lower bounds and a valid inequality that are used to strengthen both models. When the lower bounds and the valid inequality are applied, the performance of both models is greatly improved by reducing the gap and reaching optimality for more instances. We also introduced two heuristics that exploit the proposed interval modeling. The computational results indicate that both models are able to reach optimality for the 10-job instances. Moreover, the comparisons results between both models with the two heuristics showed their effectiveness.

Keywords: Scheduling; Flow shop; Breakdown; Service level (search for similar items in EconPapers)
Date: 2023
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s10479-023-05324-3

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