Shock and Vibration / 2014 / Article / Fig 1

Research Article

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

Figure 1

The change curves of the phase and group velocities of naturally propagating waves versus wave number in the Timoshenko beam for  N/m2.
848536.fig.001a
(a) The curves of the phase velocities , varying with wave number , and the lowest phase velocity of naturally propagating waves in the Timoshenko beam is  m/s
848536.fig.001b
(b) The curves of the group velocities , varying with wave number , and the maximum value of the group velocity is  m/s