نوع مقاله : پژوهشی
1 دپارتمان مهندسی صنایع، دانشکده فنی و مهندسی، دانشگاه بوعلی سینا، همدان، ایران
2 دانشگاه بوعلی سینا-دانشکده مهندسی- گروه مهندسی صنایع-
عنوان مقاله [English]
Growing natural disasters such as floods, earthquakes, war, and terrorist attacks have encouraged the government to plan for crisis response situations. As an important crisis management activity, the humanitarian supply chain can play a key role in saving lives, transporting victims to emergency centers, evacuating the homeless from the affected area, and meeting the needs of those in crisis. Also, considering coordination between the members of the supply chain and using suitable contracts can increase the efficiency of helping injured people. In previous research, the quantity flexibility contract (QFC) is rarely used in crisis situations. Therefore, this contract is investigated in this study. In the present study, a QFC is concluded between the internal supplier (manufacturer) and the relief organization. Quantity flexibility contract provides a kind of coordination for inventory management by determining the number of orders between the relief organization and the internal manufacture. In this study, the purpose of signing a quantity flexibility contract between the relief organization and the supplier is not only to satisfy more demand points in the event of a disaster but also to reduce the unused items of relief items after the disaster attacks, and also to create fewer shortages in the affected areas. The components of the supply chain of several products presented in this research include an internal supplier (manufacturer) and a foreign supplier, the relief organization, and the points of demand (affected areas). Due to the crisis, the demand for the affected areas has been considered indefinitely. The objectives of the model minimize total costs and time. To solve the proposed model, the augmented ε-constraint method is used. The results of the studies show that the model is more sensitive to changes in demand, which makes it more necessary for planners in this field to be more careful about the demand parameter.