Collision Dynamics Simulation Of Maglev Train Based On ABAQUS

As a new transportation, maglev train has being discussed about safety, which hasbecome a key issue inthe field.Improving crashworthiness of the vehicle on a collision andensuring the safety of passengers are the main purpose of the study. Magnetic levitation bodyis consideredin this paper, designed by Beijing Enterprises Holdings Maglev TechnologyDevelopment Co., Ltd... The simulation for the vehicle collision is carried on using ABAQUS.The deformation of material, energy conversion and the change of force are researched tooptimizethestructure of the train body, in order to improve its crashworthiness.Firstly, the development the low-speed maglev train is discussedfrom the two aspectsof domestic and foreign, as well as Beijing Enterprises Holdings Maglev TechnologyDevelopment Co., Ltd... Thenthe necessity of the research for crashworthiness about maglevtrain is emphasizedand some research software is refer to in this chapter.Secondly, the reasonable material and structure of maglev train body are selectedthroughdemonstration,and on the basis of data provided by Beijing Enterprises Holdings MaglevTechnology Development Co., Ltd., CAD model of the first car is establishedcompletely. Then finite element model is accomplishedin HyperMesh.After that,14strength calculation,1stiffness calculation conditions and3modalcalculation conditions are designed, to verify the reliability of the car model. Throughthecollision test, the crushing tube is selected and fixed to the original model, in orderto optimize collision model and improveits collision performance.Finally, bilinear material parameters are selectedin the calculation of collision.Combined with explicit time integration algorithm of ABAQUS, the initial collision iscalculated. Results show that the impact force in collision is larger. Then the model structureis optimized, and the other calculation is carried on. Results show that the newscheme reduces than the originalscheme63%in impact force. The conversion process withtime of the kinetic energy and internal energy are moregentle, which couldensure the deceleration of the train body changed steadilyin a collision.Altogether, through continuous optimization of the train body structure, a new model hasthe very big promotionin crashworthiness. According to the conclusion, selectionabout parameters of energy absorbing structure in the head of magnetic train, could help inensuring passenger safety and realizing energy absorption maximum in a collision.