Abstract
Focusing on the larger wheel unloading and poor derailment problems in dynamic performance of the new multi-axle wagon on test lately,the paper studies extensively the multi-axle wagon dynamics of the whole vehicle system. The dynamic models of the multiple-axle wagon system are constructed. The dynamic curving negotiation of the wagon is studied through the computer simulation, and the influence of tack parameters on runing safety is analyzed. The simulation and test results show that the main reason of the resulted larger wheel unloading is due to the larger track slop of 2.86‰.
