Study On Simulation Of Supply Chain Network Structure Stability

The Supply Chain network(SCN) is a mesh structure mode composes of the enterprises whichhave self-organization and self-adaption as nodes, aim at getting the whole competitive advantage,to abide by the network protocol for the principle, bases on the voluntary, equality, mutual benefit,to purchase, produce, sale, consume on one or multiple products, including control flow ofexchange, logistics, cash flow and information flow, make up by several supply chains with nodesin form of mutual crisscross.With the deepen trend of supply chain globalization, making the supplychain expanding constantly in space and time, the benefits brought by the efficiency of the supplychain makes the members to increase the dependence of the SC. The SCN damaged by emergencycases in recent years, the problem that how to improve Anti-risk property of the SC becomes thefocus of the SC research field. As research shows, the characteristic of the network mostly dependon the network topology, for the reasons, this article puts forward the key point: How the supplychain network structure can stop supply chain network risk of infectious, control the risk loss in thesmaller range.Supply chain network is the typical weighted scale-free complex network, based on thecomplex network theory, integrated use of multi-fields knowledge such as graph theory, probabilitytheory, mathematical statistics, the computational simulation and so on to study on the problem ofthe stability of the SCN structure in-depth and systematic around four questions contains―SCNtopology features‖,―the factors that affect the stability of SCN‖and―the relationship between thetopology of the network and the SCN structure stability‖.Study the SCN structure from unit to the whole, relate and analyze the features of the SCNstructure from the features of structure and the features of agents, set four parameters which cancontrol the topology of the network structure such as ratio of the nodes enterprise types, the size ofthe network, the local search scope of the nodes and the transaction distribution on SCN. Give thegraph of the structure of SCN, discussing the evolution of the SCN generation, generativemechanism and the presupposition, based above to get the generation algorithms and establish theSCN structure model. Apply the dynamic destroy affection to the destruction of the way the SCNhas to study the performance of the structure, the initial state of the destroy mode can be split intothree categories: stochastic destroy mode, deliberate destroy mode, mixed destroy mode.Based on the existing research results of the measures for network stability to set the stabilityof the network structure measurement from the two aspects of the feature of topology the SCN hasand the measure of the dynamic risk, the former is used to control the change of topology structure, the latter is used to give expression to the restrain ability of the SCN structure, the expressionindexes is risk failure strength and risk destruction speed. With the application of computersimulation technology to set up a system simulation model of the structure stability of SCN, and setgroups of simulation experiments to study the relationship between the supply chain network innerstructural properties and the stability. The study shows that, there is a close relationship between thechange of the degree distribution, node type ratio value, node local area network search, the worldscale, the distribution of supply chain network trade relationship and the stability of the supplychain network structure. Good SCN structure can restrain the spreading of dynamic risk and controlthe lost in small scope.