identyfication factors resilience of supply chain using fuzzy delphi method and mathematical model for optimal allocation of order

The supply chain disruptions have caused hundreds of drug shortages since 2011, when a disruption occurs because the supply chain needs to be limited in terms of ability to adapt, so the supply chain needs to provide medicine to the amount and at the right time and acceptable quality, but any risk in the supply chain can not only waste resources but also threaten the lives of patients. In such situations, the perceived notion of an organization reflects the organization's ability to face unpredictable situations and if the organization can identify the supplier with suitable stakeholders. The organization has more resistance to disorders. so, in this paper, supplier selection in the  supply chain was introduced, first using library analysis and delphi method, the   factors were identified, and in the end, the mathematical model for optimal allocation of order to suppliers has been identified and then the mathematical model for the optimal allocation of order to suppliers has been developed, and the supply chain transparency is increased to increase managers ' knowledge to understand the necessary changes.