Modelagem e simulação de rupturas de cadeias de suprimentos baseados em rede de Petri

 Currently, companies need to assess their exposure to risks due to the increasing dependence on global operation with suppliers, customers and other partners, and therefore, there is great interest in developing methods for operational risks assessment and Business Continuity Plans. In this context, this paper introduces a method for modeling and simulation of global supply chains focusing on disruption and resilient practices analysis. The method considers supply chains as discrete event systems and Petri net as the graphical and mathematical formal technique to supply chain modeling and simulation. The paper presents a hypothetic supply chain to explain the method application and assumes alternative suppliers negotiation as a resilient practice. Keywords Dispersed production system, Petri net, discrete event system, supply chain disruption, business continuity plan, supply chain resilience. Resumo Atualmente, as empresas precisam avaliar sua exposicao aos riscos devido a crescente dependencia dela com operacoes globais de fornecedores, clientes e outros parceiros e, por esse motivo, existe grande interesse no desenvolvimento de metodos de avaliacao dos riscos operacionais e Planos de Continuidade de Negocios. Nesse contexto, o artigo introduz um metodo para a modelagem e simulacao das cadeias de suprimentos globais focado na analise de rupturas e praticas resilientes. O metodo considera as cadeias de suprimentos como sistemas a eventos discretos e a rede de Petri como a tecnica formal grafica e matematica para modelagem e simulacao da cadeia de suprimento. O artigo apresenta uma cadeia de suprimentos hipotetica para explicar a aplicacao do metodo e assume a negociacao com fornecedores substitutos como pratica resiliente. Palavras-chave Sistema produtivo disperso, rede de Petri, sistema a eventos discretos, ruptura de cadeia de suprimentos, plano de continuidade de negocios, resiliencia de cadeia de suprimentos.

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