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

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Christian Almeder (Author) Other; Diego Klabjan (Author) Other; R.Traxler (Author) Other; Bernardo Almada Lobo (Author) FEUP

Journal

Title: European Journal of Operational Research

Vol. 241 No. 3

Pages: 727-738

ISSN: 0377-2217

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 21 Citations

ISI Web of Science

Scopus - 32 Citations

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences > Engineering

Associated Projects

BESTCASE-RL2 - Smart Manufacturing and Logistics

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12