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利用均衡理论和变分不等式研究工具,建立了随机需求情形下多层竞争型闭环供应链网络均衡模型,并在此基础上,构建了均衡约束数学规划模型,即设施竞争选址模型.利用均衡模型来捕捉由新进设施的进入所引起的网络均衡状态的变化,并将其引入位置决策过程.根据模型特点,提出了遗传算法与修正投影算法相结合的求解策略.最后利用提出的模型和求解算法对算例进行计算与分析,得到了网络竞争趋势变化情况、新设施的位置策略及其生产运营决策.
Based on the research tools of equilibrium theory and variational inequality, a multi-layer competing closed-loop supply chain network equilibrium model with stochastic demand is established. On the basis of this, an equilibrium constrained mathematical programming model is constructed, that is, Model to capture the changes of network equilibrium caused by the entry of new facilities and introduce them into the location decision process.According to the characteristics of the model, a solution strategy combining genetic algorithm with modified projection algorithm is proposed.Finally, Solve the algorithm to calculate and analyze the example, got the change trend of the network competition trend, the location strategy of the new facility and its production and operation decision.