Fuzzy Inventory Model for Deteriorating Items with Weibull Demand and Time Varying Holding Cost under Trade Credit
نویسندگان
چکیده
This paper develops a fuzzy inventory model for variable deteriorating items with time dependent two parameter Weibull demand rate. Shortages are allowed and partially backlogged. Each cycle has shortages, which have been partially backlogged to suit present day competition in the market. This inventory system follows a time varying holding cost. Here, the retailer is allowed a trade credit offer by the supplier to buy more items. The deteriorating cost, shortage cost and opportunity cost are assumed as a trapezoidal fuzzy numbers. Signed distance method is used to defuzzify the model. Optimal solution for the model is derived and the trade credits on the optimal replenishment policy are studied with the help of numerical example. A sensitivity analysis is also given to show the effect of the costs.
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