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Structural optimization design of a bolster based on a simulation-driven design

Transportation Safety and Environment 2023年第4期5卷 91-99页

作者： Xinkang Li Fei Peng Zeyun Yang Yong Peng Jiahao Zhou Technical Research Department CRRC Industrial Research Institute(Qingdao)Co.Ltd.Qingdao 266109ShandongChina Key Laboratory of Traffic Safety on Track of Ministry of Education School of Traffic and Transportation EngineeringCentral South UniversityChangsha 410075HunanChina

A simulation-driven design method which uses multiple optimization methods can effectively promote innovative structural design tion analysis can enormously improve the efficiency of modelling and *** study establishes a general workflow of structural and reduce the product development ***,the sub-model technology which has more detailed simulation and optimizaoptimization for a stainless-steel metro bolster by combining the simulation-driven design method and sub-model *** the sub-model definition phase,the end underframe sub-model which contains the bolster is obtained based on the whole car body finite element(FE)model,and the effectiveness of the end underframe sub-model is also *** the conceptual design phase,the is determined according to manufacturing processes and design *** the detailed design phase,the thickness of each topology path inside the bolster is obtained by the topology method and the optimized structure of the inner ribs inside the bolster part of the bolster is determined by size *** simulation analyses indicate that the requirements of static strength and can be decreased by 17.79% compared with the original bolster structure,which means that not only the lightweight design goal fatigue strength are fulfilled by the optimized bolster ***,the weight can be reduced by 11.18% and the weld length is *** also the welding auantity and manufacturing difficulty are geatly *** results show the effectiveness of the simulation-driven design method based on the sub-model technology in the structural optimization for key parts of rail transit vehicles.

关键词： simulation driven design sub-model topology optimization size optimization stainless-steel metro bolster

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