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A Two-level Lot Sizing and Scheduling Problem Applied to a Cosmetic Industry by Talita M.P. Schimidt; Cassius T. Scarpin; Gustavo V. Loch; Cleder M. Schenekemberg is a Engineering article available to read on EtoBox.

What is A Two-level Lot Sizing and Scheduling Problem Applied to a Cosmetic Industry about?

In this paper we address a novel variant of the two-level lot-sizing and scheduling problem inspired by a cosmetic industry in Brazil. In this problem, we seek to optimize production activities in an environment consisting of two dependent levels and an intermediate inventory between them. We consider sequencedependent setup in the first level, non-sequence dependent setup in the second level, and a different number of machines by level. Furthermore, following the mandatory requirements in the cosmetic industry, we also consider that each job must be stored for a minimum time limit and cannot exceeds a maximum time limit in the intermediate inventory. These practical requirements ensure a certain level of quality of the items produced. To solve the problem, we propose Mixed Integer Linear Programming (MILP) formulations and a hybrid exact method combining the traditional Branch and Bound (B&B) algorithm with Local Search (LS) procedures using a sequential framework. Our procedures apply several strategies of the Fix and Optimize (F&O) heuristic and Variable Neighborhood Descent (VND) principles. All methods were evaluated using a set of instances based on a real case scenario. The

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Author

Talita M.P. Schimidt; Cassius T. Scarpin; Gustavo V. Loch; Cleder M. Schenekemberg

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)