Optimal Multi-period Multi-distribution Center Location Point Change Trajectory Problem

With the development of economics, science and technology, with the decrease in the first and second source of profit, with the step of economic globalization getting faster and faster, logistics becomes more and more important and it takes our attention gradually. It even becomes one of the tokens that stand for the overall strength of the country.As one node of logistics network, distribution center also takes our interests gradually. The location of distribution center has a strategic position in the plan and design of distribution center. And it greatly influences the operation of the distribution center.So far there are many people having done a lot of researches on the location problem of distribution center. They proposed many methods to solve this problem, but none of them is perfect. Either the model is static, which doesn't reflect the fact that the best place of distribution center will change with time, or even though the model is dynamic, but it's hard to understand and the process of its calculation is very complicated. These hamper its application to practical problems.So the thesis firstly states the basic theories of logistics and distribution center and all kinds of problems relative to the location of distribution center. Then it proposes an optimization method of the location of multiple distribution centers, which is feasible and easy to understand. This way mainly uses the dynamic programming method. And it comprehensively takes some factors into consideration, such as fixed cost distribution, labor cost of different places and time value of capital, etc. Finally through a concrete instance, the thesis states how to apply the method to practical problems.