Modeling a Sustainable Multi-objective Supplier Selection and Order Allocation Problem under Disruption of Supplier

The strong competition in today's global markets and huge customer attention to factors such as price, quality, time delivery and product variety has caused the investors to focus on supply chain management. In this regard, selecting the choosing and determining the quota of each one is one of the most important and crucial decisions that not only is responsible for supplying the parts, but also accountable for maintaining the organization in the competitive environment. This paper is devoted to determine the optimal order of each product in a multi-objective and multi-period problem. The considered multiple objective functions include minimizing total purchase and order costs, transportation costs, percentage of returned and delayed products, also maximizing the total reliability of selected suppliers according to the necessary of supplying for each product. Due to the existence of unsustainable situation in the real world, in this paper the sustainable approach is introduced to create robust result.