Gestão & Produção
Gestão & Produção
Artigo Original

Demand relaxation in supplier selection processes

Relaxamento de demanda em processos de seleção de fornecedores

Felipe Vizzoto; José Vicente Caixeta Filho

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Abstract Supplier selection processes generally evaluate several criteria in order to fulfill a demand. But, what if the demand itself could be rethought, spreading the possibilities of acquisition? What are the impacts in cost and utility of buying objectives instead of pre-determined materials? This work tries to expand this discussion with a mathematical programming approach to selecting suppliers with demand relaxation. The requirements for the framework development and application in purchasing departments are also pointed out. Its adoption in association with combinatorial auctions concepts in a hypothetical but realistic context suggests a high potential to cost reduction with no significant utility decrease.


Supplier selection, Purchasing, Demand relaxation


Resumo Os processos de seleção de fornecedores geralmente avaliam um conjunto de critérios afim de melhor atender uma demanda. Mas e se a própria demanda pudesse ser repensada, expandindo as possibilidades de aquisição? Quais os impactos em custo e utilidade de se comprar objetivos ao invés de materiais pré-determinados? Este trabalho introduz essa discussão por meio de uma abordagem em programação matemática para seleção de fornecedores com relaxamento da demanda. Os pré-requisitos para seu desenvolvimento e aplicação em um departamento de suprimentos também são apontados. A adoção do modelo proposto em associação com conceitos de leilões combinatórios em um caso hipotético, mas realista, sugere um alto potencial para redução de custos sem redução significativa na utilidade.


Seleção de fornecedores, Compras, Relaxamento da demanda


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