The Impact of a Quantity Flexibility Contract on Disruption Management in a Dual-Sourcing Supply Chain

Document Type : Research Paper

Author

Assistant Professor, School of Industrial Engineering, College of Engineering, University of Tehran, Tehran, Iran

Abstract

This paper focuses on addressing resilience in a two-tier supply chain under supply disruption and demand uncertainty by integrating dual-sourcing and flexibility strategies. The supply chain comprises two suppliers and one manufacturer. In the event of a disruption with the primary supplier, a reliable backup source is chosen to supply some of the orders to the manufacturer at a higher price and lower quality than the primary source. This study aims to answer the following questions by developing a Stackelberg game model between the backup supplier and the manufacturer: How should the order quantity from each supplier be determined, and how can the backup supplier set the selling price of the component under supply disruption? This study also looks into coordinating the backup supplier and the manufacturer using a Quantity Flexibility Contract (QFC) to create flexibility in addition to redundancy for the manufacturer to manage supply disruption and demand uncertainty. Analytical results show that the component's selling price by the backup supplier increases with the disruption probability in the decentralized system but remains independent of the disruption probability under QFC. Numerical calculations demonstrate that when the disruption probability is not very high, accepting the contract prevents the backup supplier's exploitation of supply disruption and improves profits. Although the feasible range of flexibility rate for agreeing on QFC gets tighter with the increased disruption probability, the penalty price in QFC will decrease, indicating that the contract offers the manufacturer more resilience in the case of a more likely supply disruption.

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Adobor, H. & Mcmullen, R. S. 2018. Supply chain resilience: a dynamic and multidimensional approach. The International Journal of Logistics Management, 29, 1451-1471.
Chakraborty, T., Chauhan, S. S. & Ouhimmou, M. 2019. Mitigating supply disruption with a backup supplier under uncertain demand: competition vs. cooperation. International Journal of Production Research, 58, 3618-3649.
Chen, X. & Liu, X. 2024. Mitigating Supply Disruption: The Interplay between Responsive Pricing and Information Sharing under Dual Sourcing. Sustainability, 16, 5691.
Chowdhury, M. M. H. & Quaddus, M. 2017. Supply chain resilience: Conceptualization and scale development using dynamic capability theory. International Journal of Production Economics, 188, 185-204.
Fattahi, M. 2021. Resilient procurement planning for supply chains: A case study for sourcing a critical mineral material. Resources Policy, 74, 101093.
Garai, T. & Paul, A. 2023. The effect of supply disruption in a two-layer supply chain with one retailer and two suppliers with promotional effort under random demand. Journal of Management Analytics, 10, 22-37.
Giri, B. C., Majhi, J. K. & Chaudhuri, K. 2021. Coordination mechanisms of a three-layer supply chain under demand and supply risk uncertainties. RAIRO - Operations Research, 55, S2593-S2617.
Giri, B. C. & Sarker, B. R. 2016. Coordinating a two-echelon supply chain under production disruption when retailers compete with price and service level. Operational Research, 16, 71-88.
Heydari, J., Bakhshi, A. & Nikoofal, M. E. 2024. Coping with an unreliable supplier: An option contract with a backup supplier. International Transactions in Operational Research, 31, 4332-4362.
Heydari, J., Govindan, K., Ebrahimi Nasab, H. R. & Taleizadeh, A. A. 2020. Coordination by quantity flexibility contract in a two-echelon supply chain system: Effect of outsourcing decisions. International Journal of Production Economics, 225, 107586.
Hou, J., Zeng, A. Z. & Zhao, L. 2010. Coordination with a backup supplier through buy-back contract under supply disruption. Transportation Research Part E: Logistics and Transportation Review, 46, 881-895.
Hu, F., Lim, C.-C., Lu, Z. & Sun, X. 2013. Coordination in a Single-Retailer Two-Supplier Supply Chain under Random Demand and Random Supply with Disruption. Discrete Dynamics in Nature and Society, 2013, 1-12.
Ivanov, D. & Das, A. 2020. Coronavirus (COVID-19/SARS-CoV-2) and supply chain resilience: A research note. International Journal of Integrated Supply Management, 13, 90-102.
Joshi, S. & Luong, H. T. 2023. A two-stage capacity reservation contract model with backup sourcing considering supply side disruptions. Journal of Industrial and Production Engineering, 41, 60-80.
Kamalahmadi, M. & Parast, M. M. 2016. A review of the literature on the principles of enterprise and supply chain resilience: Major findings and directions for future research. International Journal of Production Economics, 171, 116-133.
Kamalahmadi, M., Shekarian, M. & Mellat Parast, M. 2021. The impact of flexibility and redundancy on improving supply chain resilience to disruptions. International Journal of Production Research, 60, 1992-2020.
Knoblich, K., Heavey, C. & Williams, P. 2015. Quantitative analysis of semiconductor supply chain contracts with order flexibility under demand uncertainty: A case study. Computers & Industrial Engineering, 87, 394-406.
Li, J., Li, Y., Li, B. & Ji, X. 2021. Contingent or stable dual sourcing? The preferences of manufacturers and suppliers under supply disruption and competition. International Journal of Logistics Research and Applications, 26, 279-319.
Li, J., Luo, X., Wang, Q. & Zhou, W. 2021b. Supply chain coordination through capacity reservation contract and quantity flexibility contract. Omega, 99, 102195.
Li, Y., Zheng, R. & Guo, J. E. 2022. Managing disruption risk in competing multitier supply chains. International Transactions in Operational Research, 29, 3622-3656.
Lou, G., Guo, Y., Lai, Z., Ma, H. & Tu, X. 2024. Optimal resilience strategy for manufacturers to deal with supply disruptions: Investment in supply stability versus dual sourcing. Computers & Industrial Engineering, 190, 110030.
Mohammadzadeh, N. & Zegordi, S. H. 2016. Coordination in a triple sourcing supply chain using a cooperative mechanism under disruption. Computers & Industrial Engineering, 101, 194-215.
Moosavi, J., Fathollahi-fard, A. M. & Dulebenets, M. A. 2022. Supply chain disruption during the COVID-19 pandemic: Recognizing potential disruption management strategies. International Journal of Disaster Risk Reduction, 75, 102983.
Namdar, J., Li, X., Sawhney, R. & Pradhan, N. 2017. Supply chain resilience for single and multiple sourcing in the presence of disruption risks. International Journal of Production Research, 56, 2339-2360.
Pan, W., So, K. C. & Xiao, G. 2022. Benefits of backup sourcing for components in assembly systems under supply uncertainty. European Journal of Operational Research, 302, 158-171.
Pereira, C. R., Lago da Silva, A., Tate, W. L. & Christopher, M. 2020. Purchasing and supply management (PSM) contribution to supply-side resilience. International Journal of Production Economics, 228, 107740.Fattahi, M. (2021). Resilient procurement planning for supply chains: A case study for sourcing a critical mineral material. Resources Policy, 74, 101093.