Study On Theories And Methods For Cooperative Optimization Of Logistics Networks

With the development of economics and society, reduction of logistics cost become an important approach to reduce cost of production and management, and raise market competition power. However, knowledge to logistics exists in elementary phase. So, it is necessary to research and explore immanent disciplinarian of logistics. How to exercise scientific plan to construct reasonable flat roof of logistics and organize logistics distribution in reason possesses important significance in practice and theory to reduce cost of production and management and raise marketcompetition power. The textual main work and innovation points include:Firstly, rational logistics flat roof must be put up in the first place in order to expand logistics industry, namely, it is logistics and distribution centers location elected. Logistics centers and distribution centers are distinguished and defined separately. Then, the problem of logistics and distribution centers location elected is researched partly. For the problem of non-competition distribution centers location elected, non-linear programming mathematics model is structured, and resolved by cooperative co-evolutionary differential evolution. For the problem of competitive distribution centers location elected, selective actions of clients are taken into account sufficiently. With multi- distribution centers existed, the location model of distribution center location selected is constructed based on most market occupancy.Secondly, for the problem of logistics center evaluation target system is ascertained for one thing. Weights of experts need to be confirmed because of experts'various knowledge background, acquaintance with projects and selves prejudice. Then, logistics centers locations selected are appraised and decided by group decision-making. A new way is brought forward for logistics centers location selected.Thirdly, double logistics vehicle routing problem is brought forward based on unilateralism logistics vehicle routing problem. Then, the mathematics models of double logistics vehicle routing problem of hard time windows and soft time windows are structured and resolved based on cooperative differential evolution.Fourthly, vehicle routing problem of Vendor Managed Inventory is analyzed. Distribution cost can be more reduced by Vendor Managed Inventory. Fifthly, Multi-objective function of vehicle deliver loading is structured based on the characters of vehicle assembly and solved by cooperative differential evolution .At last, result shows validity of textual method.