An integrated supply chain design model with random disruptions consideration

Abstract

This paper investigates a supply chain design problem where distribution centers are subject to random disruptions.As a result of disruptions, one or more of the distribution centers may fail to serve the customers. It is assumed thatcustomers have random demands; thus, each distribution center maintains some amount of safety stocks in order toprovide suitable service level for the customers it serves. The proposed model for this study is formulated as anonlinear integer programming to minimize the expected total cost which includes costs of location, inventory,transportation and lost sales. The model simultaneously determines the location of distribution centers and theallocation of customers to distribution centers. In order to solve the resulted mathematical model, an efficient solutionapproach based on genetic algorithm is developed. Finally, computational results for several instances of the problemare presented to demonstrate the effectiveness of the proposed algorithm.

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