Order Batch Model With Shelf Life

This paper studies the inventory decision-making model with fresh-keeping period.Generally,the freshness of goods with fresh-keeping period decreases with the passage of time,and the market demand rate decreases accordingly.In order to improve the market demand rate,retailers will give appropriate price discounts for goods with low freshness.At the same time,in order to meet consumers' demand for freshness,retailers will replenish the products with lower freshness during the period of continuing sale,which will lead to the coexistence of fresh goods and goods with lower freshness.In order to maximize the inventory efficiency of retailers,retailers need to determine the optimal replenishment point and replenishment volume according to different market demands at different stages.For this inventory system,we divide each selling period into several stages according to the freshness of the goods.Then,based on the maximization of the retailer's inventory benefit per unit time,we establish two inventory optimization models,linear and non-linear.Through the theoretical analysis of the model,the optimal solution of the model is given,and the optimal replenishment strategy of the retailer is obtained.Finally,we verify the validity of the model through numerical experiments.