The integrated lot sizing and cutting stock problem in an automotive spring factory

Autor(es)

Andrade, Pedro Rochavetz de Lara ^{[1, 2]} ; de Araujo, Silvio Alexandre ^[3] ; Cherri, Adriana Cristina ^[2] ; Lemos, Felipe Kesrouani ^[2]

Afiliação do(s) autor(es)

^[1] Parana Fed Univ Technol UTFPR, Ave Pioneiros 3131, BR-86036370 Londrina, Parana - Brazil

^[2] Sao Paulo State Univ UNESP, Ave Engn Luis Edmundo Carrijo Coube 14-01, BR-17033360 Bauru, SP - Brazil

^[3] Sao Paulo State Univ UNESP, Rua Cristovao Colombo 2265, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Applied Mathematical Modelling; v. 91, p. 1023-1036, MAR 2021.
• Citações Web of Science: 0

Resumo

In this paper, a manufacturer of automotive springs is studied in order to reduce inventory costs and losses in the steel bar cutting process. For that, a mathematical model is proposed considering parallel machines and operational constraints, besides the demand, inventory costs and limits for items and final products. This one-dimensional integrated lot sizing and cutting stock problem is solved by a price-and-branch approach, using column generation and a method for obtaining integer solutions. Results using real data show that the proposed method achieved, in reasonable computational time, considerably better solutions than current practice at the company. Furthermore, focused on managerial insights, tests with random data were performed to analyze the influence that different parameters have in the solution, as well as the overall performance of the method. (C) 2020 Elsevier Inc. All rights reserved. (AU)

• Processo FAPESP: 16/01860-1 - Problemas de corte, empacotamento, dimensionamento de lotes, programação da produção, roteamento, localização e suas integrações em contextos industriais e logísticos
• Beneficiário: Reinaldo Morabito Neto
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 13/07375-0 - CeMEAI - Centro de Ciências Matemáticas Aplicadas à Indústria
• Beneficiário: Francisco Louzada Neto
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs