Abstract: Inventory routing and pricing are three constrained and inter-influenced decision-making problems in Vendor Management Inventory (VMI), which is the key to decreasing operation cost and improving profit of vendors. In view of inventory routing and pricing problem with multiple vendors, many kinds of products and various regions in VMI pull supply chain, a product differentiation pricing strategy for different regional customer and different time period is put forward, and an allocation plan for rental vehicle driver cost and fuel cost of joint distribution is designed. Hereby, an inventory routing and dynamic regional pricing (IRDRP) model is established considering the vendor horizontal collaboration (HC) strategy. The results of numerical example show that the vendors' product price will go down slightly, the running distance of delivery vehicles will be shortened obviously, the delivery amount to customers is more balanced in every time periods, and the number of inventory will decrease significantly at the end of each time period with HC strategy. This research indicates that no matter how different the proportion of supply scale among vendors is, their profits can be significantly increased with the implementation of inventory routing and dynamic regional pricing. It can help to achieve the goal of win-win cooperation of vendor alliance.

Key words: vendor management inventory, inventory routing, dynamic regional pricing, horizontal collaboration strategy, optimal model

摘要： 库存路径和定价是供货商管理库存(Vendor Management Inventory, VMI)中三个互相制约和影响的决策问题,是降低供货商成本,提高其利润的关键。针对VMI拉式供应链中多供货商、多商品和多区域的库存路径定价问题,提出了对不同区域客户、在不同时段进行商品差异化定价策略,并设计一种共同配送车辆司机成本和燃油成本分摊方案,据此构建基于横向整合战略的库存路径动态区域定价模型。算例结果显示,在横向整合战略下,供货商商品定价会有所降低,配送车辆行驶距离显著缩短,各时段配货量更为均衡,期末库存数量显著降低。研究表明,无论供货商之间供货规模比例差异多大,开展库存路径动态区域定价,供货商联盟成员的利润均能得到显著提高,实现合作共赢的目标。

关键词: 供货商管理库存, 库存路径, 动态区域定价, 横向整合战略, 优化模型