Research On Service-oriented Remanufacturing Recycling Decision-making And Production Scheduling

Green remanufacturing as an important ingredient of circular economy has great benefits,such as energy saving,materials saving and environment protecting,since it is of great significance and value to be researched.However,the fact is that domestic remanufacturing industry only can be carried out in the way of individual and small lot-sizing production under traditional remanufacturing mode.Therefore,the service-oriented remanufacturing paradigm was proposed with its key issues of core acquisition decision-making and production scheduling studied in this research.The paper started with the connotation of service-oriented remanufacturing mode,which was elaborated from three aspects namely concept model,advantageous characteristics and the identified differences between traditional remanufacturing mode and service-oriented remanufacturing mode.Then the implementation path of service-oriented remanufacturing mode was pointed out.Besides,by considering the maintenance and remanufacturing decision-making problem of the product in the service stage,the service cost per unit time in the original life cycle of the product was set as the optimal objective.We assumed that the remanufacturing cost obeyed the exponential distribution and then the Weibull distribution was introduced to express the failure rate function.The optimal toolbox in MATLAB was used to approximate the optimal solution.The remanufacturing timing of XE80 A excavator was determined,which verified the feasibility of the proposed model.Furthermore,the service-oriented manufacturing/remanufacturing integrated supply chain logistics network was designed to minimize the operation cost of reverse logistics network.Considering the uncertainties of quantities and remanufacturing rate of recovered items,a mixed integer non-linear programming model was developed to optimize the choice of recycling sites and assignment of logistics amounts.In the end,out of the practice of remanufacturing production,the fuzzy process time of remanufacturing was incorporated and the store strategies among various remanufacturing processes were considered.Genetic algorithm was designed to solve the formulated model that was applied to remanufacturing flow-shop workshops in batches.A numerical example was given to prove the effectiveness and feasibility of the proposed model and designed algorithm.