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针对产品需求量和废旧品回收率的不确定性,采用情景分析方法,以总成本最小化为目标建立了闭环供应链网络设计模型。在此基础上,考虑到日益凸显的环境问题,将碳排放作为闭环供应链网络设计的重要影响因素,建立了两阶段随机规划模型,并引入碳减排风险约束,将多目标问题转化为单目标问题进行求解,以确定闭环供应链网络的布局结构和节点之间的流量安排。最后,通过算例分析,证明了模型的有效性,得到了不同风险态度决策者的最优方案,取得了碳减排风险和总成本的折中,为闭环供应链网络设计者提供决策支持。
Aiming at the uncertainty of product demand and waste product recovery rate, a closed-loop supply chain network design model was established with the goal of minimizing the total cost. On this basis, taking into account the increasingly prominent environmental issues, carbon emissions as an important factor in the design of closed-loop supply chain networks, the establishment of a two-stage stochastic programming model and the introduction of carbon emission reduction risk constraints, the multi-objective problem into a single The objective problem is solved to determine the layout structure of the closed-loop supply chain network and the flow arrangement between the nodes. Finally, an example is given to demonstrate the effectiveness of the model and the optimal solution for decision-makers with different risk attitudes. The compromise between the risk of carbon mitigation and the total cost is obtained, which provides the decision support for designers of closed-loop supply chain network.