Disassembly Planning And Program Evaluation Research On Obsolete Agricultural Machinery Products For Green Remanufacturing

With the rapid development of agricultural modernization and the shortening of the life cycle of agricultural machinery products,the upgrading of agricultural machinery products has produced a large number of obsolete agricultural machinery.Recycling and utilization of residual value in waste products is an objective requirement to achieve sustainable development and circular economy.Efficient disassembly saves natural resources and energy,promotes the construction of ecological civilization,achieves carbon peaking and carbon neutrality,and accelerates the sustainable and healthy development of the industry.The planning and implementation of the disassembly scheme is the key to realizing the dismantling of waste products.Therefore,how to reasonably construct the evaluation index system,optimize the disassembly sequence,realize the disassembly line balancing and determine the disassembly scheduling is the focus of the research.Taking green remanufacturing as the research background,the author conducts research on the disassembly optimization and scheme evaluation of waste agricultural machinery.The core content is reflected in the following four aspects:(1)Research on disassemblability evaluation of obsolete agricultural machinery products.Considering the three index systems of the time,economy,and environment in the disassembly process,a disassembly performance evaluation model that combines cross-efficiency evaluation and extension gray correlation is proposed.The author designs an improved multi-objective fruit fly optimization algorithm(IFOA)to solve the model.The crossover efficiency incorporating the coefficient of variation and Mahalanobis distance is used to evaluate the overall performance of the Pareto solution.The extension gray correlation degree determines the correlation degree of the objective function to the disassembly scheme and classifies the schemes.The effectiveness of the proposed model and method is verified by an example of the tractor rear axle.(2)Research on multi-objective disassembly sequence planning of obsolete agricultural machinery products.According to the different disassembly decisions of obsolete agricultural machinery products,this chapter builds a multi-objective low-carbon disassembly sequence optimization model with the objectives of minimizing workstations,minimizing smoothness,minimizing completion time,minimizing dismantling costs,and minimizing carbon emissions.A multi-objective discrete fruit fly optimization algorithm(MDFOA)is proposed to solve the model.The fuzzy AHP and M-TOPSIS methods are integrated to evaluate the Pareto scheme for multi-attribute decision-making.The superiority and feasibility of the proposed model and method are verified by the disassembly example of the cutting table of the combine harvester.(3)Two-stage disassembly line balancing with resource constraints.This chapter constructs a resource-constrained two-stage disassembly line balancing model with minimized disassembly time,economy,energy consumption and environmental impact.the author proposes an e NSGA-II algorithm that integrates eco-evolutionary strategies,mixed mutation and Pareto optimal solutions.A modified two-stage DEA method is used to evaluate the efficiency of disassembly remanufacturing schemes.The effectiveness of the proposed model method is verified by an example of the tractor gearbox.(4)Research on fuzzy disassembly scheduling in uncertain environmental.This chapter constructs a dual-objective disassembly scheduling model considering fuzzy disassembly time and environmental cost.Considering the uncertain characteristics of index information,the author introduces fuzzy clustering analysis method to classify waste agricultural machinery,and proposes an improved multi-objective scheduling fruit fly algorithm(MSFOA)to find high-quality solutions.Combined with illustrative examples,the rationality and feasibility of the proposed model are verified.