Research On Remanufacturing Closed-loop Logistics Network Design And Inventory Control Of Engineering Machinery Product

Today,China's construction machinery products have entered the era of large stocks,and its recycling and remanufacturing industry has also begun to develop.Although remanufacturing technology is no longer the main factor restricting the development of its recycling and remanufacturing industry,the logistics network and inventory of engineering machinery remanufacturing systems are highly uncertain and complex,and its logistics network planning and inventory control for recycling and remanufacturing Research on the relative lag of research on remanufacturing technology restricts the development of engineering machinery recycling and remanufacturing industry.Therefore,it is particularly important to study the closed-loop logistics network design and inventory control of engineering machinery products.This thesis focuses on the recycling and remanufacturing process of engineering machinery products,and conducts research on its closed-loop logistics network planning and design and its inventory control issues.The main contents of this thesis are as follows,Firstly,the research and application status of closed-loop logistics network planning,closed-loop logistics single-level inventory control and multi-level inventory control are analyzed,and its past research is summarized,and the future research direction is prospected.Secondly,the closed-loop logistics network design opportunity constraint model of engineering machinery products is established,and the genetic algorithm is used to solve the problem.At the same time,the closed-loop logistics network simulation model of engineering machinery products is established.The simulation model is used to verify the results of the genetic algorithm,and the key parameters are verified.Sensitivity analysis was carried out.Thirdly,the inventory control method of engineering machinery key parts based on simulation prediction analysis was proposed.The facility system simulation model of integrated engineering machinery maintenance/remanufacturing function was established,and the optimal inventory control was solved by simulation optimization method.The strategy provides forecast for the future demand and inventory strategy of the enterprise.Finally,the mathematical model of multilevel inventory control for closed-loop logistics network of engineering machinery products is established.The improved hybrid genetic algorithm and simulated annealing method(GASA)are proposed.The sensitivity analysis of the key parameters of the model is carried out.The cargo problem(VRPSPD)model proposes a mathematical model for the distribution path planning of closed-loop logistics network of engineering machinery products.The research results of this thesis enrich the research on closed-loop logistics and inventory system of engineering machinery remanufacturing to a certain extent,and provide reference and reference for related enterprises to plan remanufacturing closed-loop logistics network system.