A Deterministic Two-Echelon Inventory Model with an Arbitrary Number of Lower Echelon Activities
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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The Economic Order Quantity EOQ model is extended to a deterministic, tow-echelon model with an arbitrary number of activities on the lower echelon. Two variations of the model are developed using minimization of time-average cost as an objective. A no-stockouts-allowed case is examined, and a method for finding the optimal solution is developed. A backorders-allowed model is derived and partially solved here in general. A full solution is presented for a restricted range of lower echelon parameter values. Examples of the no-stockouts-allowed model are given and solved. The solutions from this model are compared to those derived assuming the activities operate wholly independently. Significant potential reduction in variable time-average cost through the use of this model is demonstrated.
- Administration and Management
- Operations Research