Research on the Simulation of Wheelset Response Characteristic Identification of Railway Fastener Loosening

Figure 7

Track vertical irregularity. In (a) and (b), the first figure is the vertical irregularity imposed on the track, the second figure is the irregularity under the speed excitation, and the third figure is the irregularity under the acceleration excitation. (a) Left track irregularity. (b) Right track irregularity.

(a)

(b)