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Research on the Infuence of multiple Parameters on the Responses of a B-type Subway Train

Chinese Journal of Mechanical Engineering 2022年第4期35卷 313-330页

作者： Yanwen Liu Bing Yang Shoune Xiao Tao Zhu Guangwu Yang Ruixian Xiu State Key Laboratory of Traction Power Southwest Jiaotong UniversityChengdu 610031China Basic R&D Department National Railway Passenger Car Engineering Research CenterChangchun Railway Vehicles Co.LtdChangchun 130113China College of Engineering Changchun Normal UniversityChangchun 130032China

To obtain improved comprehensive crashworthiness criteria for a B-type subway train,the infuence laws of the vehicle design collision weight M and empty stroke D on the train’s collision responses were investigated,and multiobjective optimization and decision-making were performed to minimize TS(total compression displacement along the moving train)and TAMA(the overall mean acceleration along the moving train).Firstly,a one-dimensional train collision dynamics model was established and verifed by comparing with the results of the fnite element ***,based on the dynamics model,the infuence laws of M and D on the collision responses,such as the energy-absorbing devices’displacements and absorbed energy,vehicles’velocity and acceleration,TS,TAMA and the coupling correlation efect were ***,surrogate models for TS and TAMA were developed using the optimal Latin hypercube method(OLHD)and response surface method(RSM),and multi-objective optimization was conducted using the particle swarm optimization algorithm method(MPOSO).Finally,the entropy method was used to obtain the weight coefcients for TS and TAMA,and multi-objective decision-making was *** results indicate that D and M signifcantly afect the compression displacements and energy absorption of the frst three collision interfaces,but have limited impact on the last three collision *** velocity versus time curves of vehicle M1 and M2 are shifted and parallel with diferent ***,the velocity versus time curves of all the vehicles are shifted but gradually divergent with diferent *** maximum collision instantaneous accelerations of the vehicles are directly determined by M,but are only slightly afected by *** the coupling efect,all concerned collision responses are strongly correlated with M;however,the responses are weakly correlated with D except for the compression displacement at the M2-M3 collision interface and the maximum collision instantaneous acceleration

关键词： Train collision response multi-body dynamics model Experiment design Surrogate model multiobjective optimization Entropy method multi-objective decision-making

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