Lead time considerations for the multi-level capacitated lot-sizing problem

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Christian Almeder (Autor) Outra; Diego Klabjan (Autor) Outra; R.Traxler (Autor) Outra; Bernardo Almada Lobo (Autor) FEUP

Revista

Título: European Journal of Operational Research

Vol. 241 Nº 3

Páginas: 727-738

ISSN: 0377-2217

Editora: Elsevier

Indexação

ISI Web of Knowledge - 21 Citações

ISI Web of Science

Scopus - 32 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas > Engenharia

Projetos Associados

BESTCASE-RL2 - Smart Manufacturing and Logistics

Outras Informações

ID Authenticus: P-00A-4AX

DOI: 10.1016/j.ejor.2014.09.030

Resumo (PT): The classical multi-level capacitated lot-sizing problem formulation is often not suitable to correctly capture resource requirements and precedence relations. Depending on lead time assumptions, either the model provides infeasible production plans or plans with costly needless inventory. We tackle this issue by explicitly modeling these two aspects and the synchronization of batches of products in the multi-level lotsizing and scheduling formulation. Two models are presented; one considering batch production and the other one allowing lot-streaming. Comparisons with traditional models demonstrate the capability of the new approach in delivering more realistic results. The generated production plans are always feasible and cost savings of 30-40% compared to classical models are observed.

Abstract (EN): The classical multi-level capacitated lot-sizing problem formulation is often not suitable to correctly capture resource requirements and precedence relations. Depending on lead time assumptions, either the model provides infeasible production plans or plans with costly needless inventory. We tackle this issue by explicitly modeling these two aspects and the synchronization of batches of products in the multi-level lot-sizing and scheduling formulation. Two models are presented; one considering batch production and the other one allowing lot-streaming. Comparisons with traditional models demonstrate the capability of the new approach in delivering more realistic results. The generated production plans are always feasible and cost savings of 30-40 percent compared to classical models are observed.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12