چکیده:
The supply chain is a complex logistics system. In this chain, the raw material is converted to the final product and is provided to the end consumer. Intense competition in global markets and high customer attention to factors such as price, quality, delivery time and product diversity, have led investors to focus on supply chain management. As a result, choosing the supplier and order allocation of each supplier's order is very important. This paper aims at designing a five-echelon supply chain structure including multiple suppliers, multiple producers, multiple distributors and multiple customers for determining the optimal order of each product in a multi-objective and multi-period problem. Also, with regard to importance of distribution centers, these parts of the supply chain are considered hub centers. The considered multiple objective functions include minimizing total purchase, transportation costs, shortage cost and holding cost, also maximizing total score of each one.
خلاصه ماشینی:
Modeling a Five-Echelon Supply Chain Network under Disruption with Considering Hub Centers by Scenario-Based Approach Farnaz Javadi Gargari1*, Jafar Bagherinejad2 1- MSc in Industrial Engineering of Alzahra University,Tehran, Iran 2- Associate Professor in Industrial Engineering of Alzahra University, Tehran, Iran *F.
This paper aims at designing a five-echelon supply chain structure including multiple suppliers, multiple producers, multiple distributors and multiple customers for determining the optimal order of each product in a multi-objective and multi-period problem.
Mendoza and Ventura (2008) [5] introduced a two-step method for supplier selection and allocation of the order share to each one in the problems.
In the first step, Analytical Hierarchy Process (AHP) is used to rank suppliers, and secondly, the allocation of orders to each one is made in such a way that the maximum utility function and supply chain costs are minimized.
Zhang (2011) [12] proposed a single-objective single-product model for supplier selection and an order value model under stochastic demand mode.
Seif Barghi and Esfandiari (2014)[8] presented a multi-objective model for selecting suppliers that the stochastic demand and price dependent on order quantity are considered in their model.
2- Research Method We consider a general supply chain network of five different levels including customers, retail distributers, center hub distributers, producers, and suppliers.
In the first method, the example is solved by using the expressed definite model based on the first combination mode values (low raw product demand, low complete product demand).
Scenario-based stochastic programming (SP) method is able to consider different scenarios for uncertain parameters, which have significant effects in supply chain operation.