A two‐echelon inventory‐location problem with service considerations

Ho‐Yin Mak and Zuo‐Jun Max Shen

Naval Research Logistics (NRL), 2009, vol. 56, issue 8, 730-744

Abstract: We study the problem of designing a two‐echelon spare parts inventory system consisting of a central plant and a number of service centers each serving a set of customers with stochastic demand. Processing and storage capacities at both levels of facilities are limited. The manufacturing process is modeled as a queuing system at the plant. The goal is to optimize the base‐stock levels at both echelons, the location of service centers, and the allocation of customers to centers simultaneously, subject to service constraints. A mixed integer nonlinear programming model (MINLP) is formulated to minimize the total expected cost of the system. The problem is NP‐hard and a Lagrangian heuristic is proposed. We present computational results and discuss the trade‐off between cost and service. © 2009 Wiley Periodicals, Inc. Naval Research Logistics 2009

Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:wly:navres:v:56:y:2009:i:8:p:730-744

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