a multi-objective optimization model for the resilience and sustainable supply chain:a case study

In this research, a real case study of the natural gas supply chain has been investigated. using concepts related to natural gas industry and the relations among the components of gas and oil wells, refineries, storage tanks, dispatching, transmission and distribution network, a seven-level supply chain has been offered and presented schematically. the aim of this paper is to optimize the case study using a multi-objective and multi-period model to minimize the economic and environmental costs as well as the penalty per underutilized capacity and maximize the total revenue as well as the service level. a small-sized model is verified and solved using an improved augmented ε-constraint algorithm to generate pareto optimal solutions and assessed trade-offs among objectives in order to help decision makers make an optimal decision. to the best of our knowledge, this is the first study that presents a multi-objective optimization model for the resilience and sustainable supply chain.