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Article Dans Une Revue International Journal of Production Research Année : 2023

A decomposition and coordination method for optimising ( Q , S ) policies in a two-echelon distribution system with joint replenishment

Résumé

A continuous-review, two-echelon distribution system with one central distribution centre (CDC) and multiple regional distribution centres (RDCs) is studied. The CDC jointly replenishes its inventories of multiple items from an external supplier, while each RDC replenishes its inventories of the items from the CDC. Each RDC faces a Poisson demand for each item, and the inventories of each stock in the system are controlled by a (Q, S) policy. Under this policy, an order is placed by a stock whenever its aggregate demand since the last order reaches a given quantity, and the inventory position of each item is raised up to its order-up-to level after the order placement. The objective is to optimise these (Q, S) policies so that the expected total cost of this system is minimised. We propose a decomposition and coordination method for this optimisation after deriving analytically the cost function of the system. Our extensive numerical experiments demonstrate the effectiveness of the proposed method. Furthermore, a parameter sensitivity analysis is conducted to analyse the impacts of some key system parameters on the performance of the method, and managerial insights are provided for optimising distribution systems with joint replenishment and real applications of the method.
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Dates et versions

hal-04427137 , version 1 (16-02-2024)

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Lei Wang, Haoxun Chen. A decomposition and coordination method for optimising ( Q , S ) policies in a two-echelon distribution system with joint replenishment. International Journal of Production Research, 2023, 62 (1-2), pp.556-573. ⟨10.1080/00207543.2023.2276808⟩. ⟨hal-04427137⟩
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