Modelling Integrated Multi-item Supplier Selection with Shipping Frequencies

Subject Areas : Design of Experiment

Abolfazl Kazemi ¹ , Danial Esmaeili Aliabadi ²

1 - Faculty of Industrial and Mechanical Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran
2 - Faculty of engineering and natural science, Sabanci university, Istanbul, Turkey

Received: 2011-10-12 Accepted : 2012-02-13 Published : 2015-07-01

Keywords: Multi-item, supplier selection, Integrated supply chain, Frequent shipping, Multi-supplier,

Abstract :

There are many benefits for coordination of multiple suppliers when single supplier cannot satisfy buyer demands. In addition, buyer needs to purchase multiple items in a real supply chain. So, a model that satisfies these requests has many advantages. We extend the existing approaches in the literature that assume all suppliers need to be put on a common replenishment cycle and each supplier delivers exactly once in a cycle. More specifically, inspired by approaches that perform well for the Economic Lot Scheduling Problem, we assume an integer number of times a supplier can ship available items in an overall replenishment cycle. Because of complexity issue, a new approach based on genetic algorithm is employed to solve the presented model. Results depict that new model is more beneficial and practical.