... caused by curves. Noise and wheel profile monitoring tests were carried out four times in 2007–2008. In order to identify the excitation conditions, the frequencies are investigated which are related to the unstable dynamic behaviors of the wheel. In addition, the curve negotiation performance of a metro...

... wheels curved track critical hunting speed nonlinear creep model eight degrees of freedom system In the 20th century, the high-speed railway (HSR) has become one of the important transportation systems. Particularly with the advent of the high-speed passenger trains, the problem...

... of freedom, which runs on a tangent track at a constant speed. The tangent track is modeled as two elastic beams by discrete nonsymmetrical supporters modeling fastening systems, sleepers, and ballasts. The normal contact forces between wheels and rails are described by Hertzian elastic contact theory...