Two storage inventory model for deteriorating items under fuzzy environment

Abstract

In the present study, we investigate a two-warehouse economic order quantity model for deteriorating items in which demand increases with respect to time. Shortages are allowed and partially backlogged. This study has been done with two types of model, first one is crisp model and the second is fuzzy model. In crisp model the capacity of the own-warehouse, holding cost, unit cost, shortage cost and opportunity cost are taken as the form of real numbers and in fuzzy model, these are taken as a triangular fuzzy numbers. Graded Mean Representation method is used to defuzzify the total cost function in case of fuzzy model. To illustrate the model numerical examples are given and sensitivity analysis has been done.