Shock and Vibration / 2014 / Article / Fig 5

Research Article

Analysis of Critical Velocities for an Infinite Timoshenko Beam Resting on an Elastic Foundation Subjected to a Harmonic Moving Load

Figure 5

Critical velocity varies with loading frequency for  N/m2.
(a) Critical velocity versus loading frequency , in which , , as shown in Figure 5(b)
(b) The phase velocity and group velocity of naturally propagating waves versus wave number , ,