Analysis of the critical velocity of a load moving on a beam supported by a finite depth foundation

摘要

Highlights ? Semi-analytical solution of steady-state response of infinite beam on finite depth foundation under constant force in 2D. ? Enhanced formula for the critical velocity. ? Accurate identification of critical velocities by double pole of undamped beam deflection Fourier image. ? Identification and definition of pseudo-critical velocities. ? Analysis of several cases with multiple (pseudo-)critical velocities.