Research On Design Of Resilient Distribution Network Under Disruption Risks

With the swift development of modern science technology and fortified trend of economics globalization, social division of labor becomes more intimate increasingly. The number of corporations which are in distribution network is getting large and the regional distribution of these corporations is extending. In such circumstances, the distribution network develops into a complicated cooperative social network which is composed of merchandise distributors, retailers, customers and can realize the procedure that products flow from distributors to customers satisfying customers’ needs. A large number of participants and their reciprocal relations between each other makes the distribution network more complex and of uncertainty in operating environment.There are many weaknesses that distribution network frequently betrays while encountering the failure. Failure occur at any node or link would soon start to influence other corporations in the network, which can produce a sobering effect over the normal operation of distribution network. Examples of this sort might frequently occur in recent years. Therefore the existence of failure should be considered in design of operation strategy, which can make distribution network restore to normal operating condition when the failure take place. Without doubt, this ability of recovery has important sense and value for distribution network.Aiming at this problem, this thesis present a deep investigation on design of elastic distribution network which is in face of failure environment. Based on the results of previous researches, this thesis’main study work include these components:The first part is introduction and literature review. In this part, the background and significance of selecting the topic, the research contents and methods, and the general framework of this thesis are introduced. Then a summary and review of domestic and foreign relative literatures is made, which focuses on the risk management of supply chain and the design of distribution network under risks.The second part is theory framework for research of this thesis. First of all the analysis on vulnerability and potential invalidation mode of distribution network is performed, which indicates the necessity of establishing a elastic distribution network. Secondly, the study object of distribution network and its category are clearly defined, and the concepts of distribution network and their features are illustrated. Finally, the principles followed and the strategy of establishing a elastic distribution network are propounded.The third part is design of elastic distribution network and procedure of mathematical modeling, which is cardinal research of this thesis. Two elastic distribution networks are designed, one is based on single distribution center invalid, the other is a tertiary network based on multiple distribution center invalid. Mathematical model is established for each distribution network. The ideas of modeling is to establish combined strategy for emergency to deal with the risk by utilizing the lateral communication between distribution centers. The former brings in the consideration of modes of transport between distribution centers and commodity stocks in mathematical model, which aims at minimizing total operating cost of the system. The concept of maximum tolerance reliability in distribution network is introduced, which is the foundation of the elastic restrain. The latter brings in the consideration of type selection of distribution centers and the preference of decision-maker. The total operating cost of system in normal condition is linked up with the total cost in invalid condition through weighing and balancing the model coefficient to find out the optimum combination strategy which can fill the preference of decision-maker.At last, corresponding numerical example is given for the two mathematical models, then the parameters of models are derived and the validity and feasibility of models can be verified.