TAO Van chien, LI Fu, DING Jun jun

 

(School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China)

 

 

Abstract: Aiming at the wheel wear problem of D19E diesel locomotive, the basic technology of Vietnam railway and D19E diesel structure were analyzed, the D19E diesel locomotive dynamics model was built by SIMPACK software and a railway line model was built based on Vietnam railway line. A model in which locomotive dynamics, FASTSIM algorithm and Braghin profile wear model were combined, was developed to pridict the wheel tread wear. The wheel wear of D19E diesel locomotive was simulated based on this model, the tread wear depth data was smoothed based on sliding mean method, and the simulation results were compared with that of field measured results. The results indicate that, the wear occurs in (-50mm~45mm) of wheel tread, the maximum wear depth occurs in wheel flange root. The wear depth of wheel tread in simulation results and field measured results are similar, show that presented simulation model is feasible to predict the wheel tread wear of locomotive, high reliability.

 

Key words: vehicle engineering; wheel wear; FASTSIM algorithm; wear model; dymamic simulation; wheel rail contact