Research on closed-loop supply chain buy back contract of anti-disruption when demand and production cost disruptions

Closed-loop supply chain buy back contract of anti-disruption when demand and production cost disruptions is studied in this paper. The results show that: (2) closed-loop supply chain has a certain robustness under the condition of buying-back contract. (2) When emergent event makes the market demand and cost to large disturbances, the buy-back contract cannot coordinate the closed-loop supply chain. But the adjusted buy-back contract T_G (q, w, b, w₀, p₀) has the nature of anti-disruption, and it can coordinate the closed-loop supply chain whether before or after the emergency. (3) In the short term, the recycling used products is not affected by the emergent event. Therefore, after the emergency occurs, the strategy for recycling used products can be temporarily unadjusted. These Conclusions not only can enrich and perfect the theory of closed-loop supply chain disruption management, but also can guide enterprises of closed-loop supply chain to actively prevent and respond to emergencies, and effectively mitigate the adverse impact of emergent events.