Avaliação do Sistema Simplified Drum-Buffer-Rope em ambientes de produção para estoque
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Data
2016-03-29
Autores
Castro, Robson Flávio [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Por meio de experimentos baseados em simulação computacional, este trabalho tem como objetivo avaliar o desempenho do Sistema de Coordenação de Ordens (SCO) Simplified Drum-Buffer-Rope (S-DBR) aplicado a ambientes de produção para estoque, denominado Make-to-Availability (MTA). Composto por um conjunto de técnicas, o MTA visa maximizar o nível de serviço a partir da garantia de estoques de produtos acabados para pronta entrega. Nesta pesquisa, são criadas derivações do MTA com as retiradas das técnicas Gerenciamento do Pulmão, Priorização pelo Status do Pulmão e Carga Planejada. O desempenho das derivações é comparado com o MTA em sua forma completa. Para tanto, quatro indicadores de desempenho são utilizados: fill rate, estoque em processo, estoque de produtos acabados e tempo de reposição. Quatro cenários foram simulados, variando as taxas médias de demanda e o coeficiente de variação dos tempos de processamento. O MTA não obteve o melhor desempenho em nenhum dos indicadores, nos quatro cenários, porém a retirada das técnicas não trouxe melhoras significativas na disponibilidade dos produtos, e em alguns casos aumentou extremamente os níveis de estoque e o tempo de reposição. Ao final as técnicas se mostraram importantes para manter a disponibilidade dos produtos com menores níveis de estoque e menor tempo de reposição.
Through experiments with computer simulation, this work aims to evaluate the performance of an Ordering System Coordinator (OSC), Simplified Drum-Buffer-Rope applied to a make to stock environment, called Make-To-Availability (MTA). Composed of a set of techniques, the MTA aims to maximize the level of service from the supply guarantee for immediate delivery. In this research, MTA derivations are created pulling out the techniques Buffer Management, Status of Buffer Prioritization and Planned Load. The performance of derivations was compared with MTA in its complete form. For this purpose, four performance indicators were utilized: fill rate, work in process, finished goods inventory and reposition time. Four scenarios were simulated, with different median demand rates and the coefficient of variation of the process time. The MTA does not obtain the best performance in any indicator, at the four scenarios, however the pulling out of techniques does not bring significant improvement on product availability, and in some cases, stocks and reposition time greatly increased. In the end, the techniques have shown important to keep the availability of products with lower stocks and smaller reposition time.
Through experiments with computer simulation, this work aims to evaluate the performance of an Ordering System Coordinator (OSC), Simplified Drum-Buffer-Rope applied to a make to stock environment, called Make-To-Availability (MTA). Composed of a set of techniques, the MTA aims to maximize the level of service from the supply guarantee for immediate delivery. In this research, MTA derivations are created pulling out the techniques Buffer Management, Status of Buffer Prioritization and Planned Load. The performance of derivations was compared with MTA in its complete form. For this purpose, four performance indicators were utilized: fill rate, work in process, finished goods inventory and reposition time. Four scenarios were simulated, with different median demand rates and the coefficient of variation of the process time. The MTA does not obtain the best performance in any indicator, at the four scenarios, however the pulling out of techniques does not bring significant improvement on product availability, and in some cases, stocks and reposition time greatly increased. In the end, the techniques have shown important to keep the availability of products with lower stocks and smaller reposition time.
Descrição
Palavras-chave
Planejamento e Controle da Produção, Simplified Drum-Buffer-Rope, Make-To-Availability, Produção para Estoque, Simulação, Production Planning and Control, Simplified Drum-Buffer-Rope, Make-To-Availability, Make to Stock, Simulation