To achieve reasonable lightweighting for the breaking down mill frame,the dangerous section shape and the overall size of the frame is analized.Firstly,the strength,stiffness,and hazardous section position of the frame is determined by static strength stress analysis;then,with the goal of minimizing the equivalent stress value,the sub model analysis method and Workbench optimization module are used to optimize the composite fillet size parameters;finally,a response surface model is constructed based on the Box Behnken method,and the analytic hierarchy process and particle swarm optimization algorithm are used to find the optimal combination of rack structural parameters.The overall weight of the optimized frame decreased by about 4 701 kg,and the maximum stress at the dangerous section decreased by about 8.845 MPa.The optimization results can reduce production costs by ensuring the strength and stiffness of the billet opening machine frame.
关键词
开坯机机架/响应面模型/轻量化设计/结构优化/有限元
Key words
breaking down mill frame/response surface model/lightweight design/structure optimization/finite element
维普
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