Multi-objective Lightweight Design Of Sinter Circulates Cooler Trolley Based On CAE

Sinter circulates cooler,as a kind of high temperature sinter coolin g equipment,is used to cool high-temperature sintered ore below a certain temperature.As a heavy sintering cooling equipment process equipment,the weight of its trolley is one of the most critical indexes considered by designers,which has a decisive i nfluence on the operation energy consumption,operation cost and construction cost.However,lightweight design of sinter circulates cooler trolley under the high temperature and heavy load condition is hard to accomplish because of the complexity of simula tions required in strength analysis.With the maturity of CAE technology and the continuous progress of optimization design methods,a new idea is provided for the lightweight design of the sinter circulates cooler trolley.Based on CAE technology,this paper carries out simulation analysis on the process of the sinter circulates cooler trolley,and carries out the lightweight multi-objective design of the trolley body.The main research work of this paper is as follows :(1)The thermal-solid coupling numerical simulation model of the sinter circulates cooler is established in the process of high temperature sinter cooling,and the boundary conditions of load and constraint are given according to the actual operating parameters.By comparing the response results of the model with the actual test data,and the reliability of the model is verified.(2)According to the numerical simulation results of the cooling process of the sinter circulates cooler and the working environment of the sinter circulates coo ler,the structural parameters that need to be optimized are selected.Single factor analysis is used to evaluate the individual influence of each structural parameter on the target parameter,and the global sensitivity analysis is used to quantitatively evaluate the influence of different structural parameters on different target parameters.(3)According to the results of analysis,the mass of the sinter circulates cooler trolley and the maximum coupling stress in the cooling process of the sinter circulates cooler trolley are taken as the optimization objectives,the four structural parameters are selected as the design variables,and the multi-objective optimization design is carried out.The optimal Latin hypercube design and Radial Basis Neural Network(RBNN)are used to build and train the multi-objective optimization model,and The second Generation of Non-dominated Sorting Genetic Algorithm(NSGA-II)is used to solve the model.Through the results of lightweight multi-objective design,the best solution of structural parameter design of the sinter circulates cooler trolley is obtained,Namely,the optimal point of lightweight and the maximum point of safety factor(the minimum point of maximum coup ling stress when the sinter circulates cooler trolley works).A set of Pareto optimal solutions are given for engineering personnel to select parameters according to actual working conditions and reliability requirements to realize the maximum utilization of resour ces.