The Research On The Inventory Cost Control Model In Supply Chain Environment Based On Stochastic Demand

With the developing of economic globalization, the competition between corporations has changed to competition between supply chains. The study on supply chain is a hot topic. It is reasonable to choose cost as the main standard to evaluate the performance of a supply chain. But among the many kinds of cost, inventory cost take up a large part. How to reduce inventory cost has become the most important target of a corporation. By quantitative comparison of inventory costs, it can courage node enterprises to use advanced supply chain management strategy for the inventory. At the same time, it plays an important role in reducing supply chain inventory costs and improving the competitiveness of the supply chain.Model number will be used in the paper. The paper studies the Retailer Managed Inventory Strategy (RMI), Vendor Managed Inventory Strategy (VMI) and Joint Managed Inventory Strategy (JMI). Coordination mechanism is needed in VMI and JMI. The paper establishes models in the condition of symmetric information and asymmetric information in VMI. At last, numerical example is used to compare the optimal order quantity and profit of the three strategies. The results can be got through the programming solution function of EXCEL,Finally, this paper compares the optimal order quantity and profit in three strategies under symmetric information and the changing trend of the optimal fill volume and profit in vendor managed inventory strategy under asymmetric information. The conclusions are as following:Three joint managed inventory strategy in the supply chain is the most efficient, followed by the vendor managed inventory, the lowest is retailer managed inventory; information asymmetry on the supply chain can not be neglected, it is found that under asymmetric information suppliers and reduce overall supply chain efficiency in vendor managed inventory strategy by contrasting information asymmetry and symmetry; The overall profits under stochastic demand is lower than under certainty, because the settings of safety stock can reduce the efficiency of the whole supply chain.