Authors: Seyed Mohammad Mahdi Kazemi, Peyman Taki, Seyed Mohamad kazemi
In this paper a two- echelon supply chain, including manufacturers and retailers have been considered. We have opened centers for manufacturers and retailers to set; we also considered how to determine the allocation of suppliers to retailers and the order amount of each retailer to maximize the whole profit of the supply chain. Our strategy in this paper is to determine the profit considering the unit price and revenue sharing; we also used simulation to estimate the transportation cost in the supply chain. Transportation cost for each vehicle is regarded with different costs during the loading, unloading and journey events according to discrete event simulation. Defined model for supply chain has been solved by simulating annealing (SA) algorithm.