Shock and Vibration / 2014 / Article / Fig 4

Research Article

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

Figure 4

Critical velocity varies with loading frequency for  N/m2.
848536.fig.004a
(a) Critical velocity versus loading frequency , in which , , as shown in Figure 4(b)
848536.fig.004b
(b) The phase velocity and group velocity of naturally propagating waves versus wave number , ,  m/s