需求和零售商购买成本同时扰动的供应链应急协调

供应链的契约协调机制是供应链管理的重要内容,突发事件下的供应链协调机制是近年来的研究热点。 研究了在单制造商单零售商组成的供应链中,假设生产成本是其生产数量的凸函数下,当市场需求为零售价格的非线性函数,突发事件造成需求和零售商购买成本同时发生扰动时,集权、分权供应链应对突发事件的最优策略。 首先证明了稳定环境下的数量折扣契约可以实现该供应链的协调,在集权式决策下,供应链的原有生产计划对突发事件具有一定的鲁棒性,但是当突发事件造成的扰动超过一定幅度时,供应链的协调将会被打破,供应链系统必须改变生产计划才能实现其利润最大化。 在分权式决策下,供应链的原数量折扣契约不能使扰动后的供应链达到协调,因此,设计了新的数量折扣契约来使扰动后的供应链达到协调。最后给出一个算例验证了相关结论。

Supply Chain Coordination with Demand and Purchase Cost of Retailers Disruptions

The contract coordination mechanism of supply chain is the important content of chain management, while the contract coordination mechanism of supply chain about disruption event is the study hotspot in the recently years. In this paper, coordination policies for a one-supplier-one-retailer supply chain that experiences demand and purchase cost disruptions in the planning horizon are presented. The disruption management decisions from the point view of the supplier when demand and purchase cost of retailer disrupt simultaneously under the mode of concentrated and decentralized supply chain are analyzed. It is proved that a quantity discount contract can be used to coordinate the supply chain under normal environment. Under centralized decision-making model, the original production plan of the supply chain has certain robustness and it is necessary to change the original production plan to maximize the supply chain profit when the disruptions change greatly enough. Under the decentralized decision-making model, it is proved that the supply chain cannot be coordinated by the original quantity discount contract and the new appropriate quantity discount contract is designed to coordinate the supply chain after disruptions. Finally, a numerical example is given to illustrate the findings.