Simulation and analysis of wheelset fitting process of high-speed EMUs

Based on the commercial finite element software ABAQUS,numerical simulation of the wheelset fitting process of high-speed EMUs is carried out.The calculated force-distance curve of the fitting process(fitting curve) accords well with the experimental one,thus verifying the correctness of the finite element model.By using this model,the distribution and variation of the equivalent stress in a wheelset during the fitting process are analyzed,and the positions of the maximum equivalent stresses are obtained.The variation of the equivalent plastic strain in the wheelset is calculated,and it is found that the plastic deformation zone appears in the small area around the end of the axle lead-in section.The wheel deformation under different stages of the fitting process is analyzed,and the deformed geometric features of the wheel hub hole,spoke and rim are obtained.The established finite element model provides a theoretical basis for optimizing the fitting technology and structural parameters of the wheelset.