Topological optimization design of the underframe section of a certain subway aluminum alloy car body
In this paper,the finite element analysis of a subway aluminum alloy car body under several important working conditions is carried out.The results show that the static strength and stiffness of the car body meet the specified require-ments,and there is potential for weight reduction.Subsequently,topological optimization is carried out for the aluminum alloy section of the underframe of the car body,and the fascia of the underframe is re-designed according to the results of the to-pological optimization and the actual engineering practice.The static strength and stiffness of the optimized underframe are verified through the finite element analysis.The results show that the optimized car body meets the requirements for static strength and stiffness.After optimization,the weight of the underframe is reduced by 268 kg(8.8%),which is a considera-ble weight reduction.This study can provide reference for future lightweight design of the fascia plate of the underframe of the aluminum alloy car body.
subwayaluminum alloy car bodyunderframetopological optimizationlightweight design
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