关键词: TBL理论, 3C产品, 可持续闭环物流网络, 模糊优化

Abstract:

In view of the 3C products’ characteristics of rapid replacement, uncertain recovery amount and hazardous to environment if handled improperly, a sustainable closed-loop logistics network model under uncertain environment is established by adopting TBL（Triple Bottom Line method） theory with the consideration of the lowest cost, the smallest environmental impact and the greatest social benefits. In order to solve the model, the recovery quantity is regarded as a triangular fuzzy parameter, and the fuzzy constraint is transformed into an equivalent clear condition by using the fuzzy opportunity constraint method. The sub-optimization objectives in the model are fuzzified by defining the objective membership degree, and the original optimization problem is transformed into a single-objective optimization problem based on the maximum satisfaction degree. Taking 3C products in Shanghai as an example, the model and its effectiveness is solved by genetic algorithm with a comparison of calculating results of various objectives.

Key words: TBL（Triple Bottom Line method） theory, 3C products, sustainable closed-loop logistics network, fuzzy optimization