引入第三方物流的VMI模型优化研究

Research on Improving VMI Model by Introducing Third-party Logistics

关于卖方管理库存(VM I)的研究多是从主导企业(买方)来评价VM I的实施效果的,事实上不但应该考虑VM I对买方的影响,还应考虑VM I对整个供应链的影响。在前人研究的基础上,考虑了运输成本和经济批量之间的内在联系,对传统VM I模型进行了完善。通过模型分析发现了卖方短期成本增加的条件,在此基础上通过引入第三方物流作为中间作业平台来优化VM I模型,从而缓解卖方短期成本增加的弊病,降低VM I作业环节的物流成本,增加卖方的短期利润,以提高卖方参与VM I的积极性。

Most researches on VMI （Vendor Managed Inventory） evaluated its effect only from the buyer＇s standpoint. In fact, not only the influence on the buyer but on the whole supply chain should be considered. Based on foregoing researches, this paper tries to perfect the traditional model of VMI by taking the correlation between transport costs and economic order quantity into account. The certain cost condition in which supplier＇s short-term cost tends to increase is found based on the new model studying. As a middle working platform, the introduction of third-party logistics （TPL） is found to be propitious to reduce supplier＇s logistics costs and increase his short-term profit under VMI, which can inspirit suppliers to take part in VMI.