Journal
APPLIED INTELLIGENCE
Volume 52, Issue 12, Pages 13478-13496Publisher
SPRINGER
DOI: 10.1007/s10489-021-02944-9
Keywords
Closed-loop supply chain network; Environmental impacts; Mathematical modeling; Self-adaptive NSGA-II algorithm
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This research focuses on the design of a closed-loop supply chain network considering various facilities and aims to minimize total cost and total CO2 emission. It proposes a self-adaptive non-dominated sorting genetic algorithm II (NSGA-II) algorithm and enhances its performance using the Taguchi design method. The results show that the proposed algorithm outperforms the epsilon constraint method in terms of solution time and can generate efficient Pareto solutions.
Configuration of a supply chain network is a critical issue that contributes to choose the best combination for a set of facilities in order to attain an effective and efficient supply chain management (SCM). Designing a closed-loop distribution network of products is an important field in supply chain network design, which offers a potential factor for reducing costs and improving service quality. In this research, the question concerns a closed-loop supply chain (CLSC) network design considering suppliers, assembly centers, retailers, customers, collection centers, refurbishing centers, disassembly centers and disposal centers. It aims to design a distribution network based on customers' needs in order to simultaneously minimize the total cost and total CO2 emission. To tackle the complexity of the problem, a self-adaptive non-dominated sorting genetic algorithm II (NSGA-II) algorithm is designed, which is then evaluated against the epsilon-constraint method. Furthermore, the performance of the algorithm is then enhanced using the Taguchi design method to tune its parameters. The results indicate that the solution time of the self-adaptive NSGA-II approach performs better than the epsilon constraint method. In terms of the self-adaptive NSGA-II algorithm, the average number of Pareto solutions (NPS) for small and medium-sized problems is 6.2 and 11, respectively. The average mean ideal distance (MID) for small and medium-sized problems is 2.54 and 5.01, respectively. Finally, the average maximum spread (MS) for small and medium-sized problems is 3100.19 and 3692.446, respectively. The findings demonstrate that the proposed self-adaptive NSGA-II is capable of generating efficient Pareto solutions. Moreover, according to the results obtained from sensitivity analysis, it is revealed that with increasing the capacity of distribution centers, the amount of shortage of products decreases. Moreover, as the demand increases, the number of established retailers rises. The number of retailers is increasing to some extent to establish 7 retailers.
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