This paper is a study of the steady-state response of an initially stressed, thick strip plate subjected to a sinusoidally oscillating moving line load. The problem is studied on the basis of a thick plate theory which takes into account the effect of the second-order increments of the normal stresses as well as the effect of the rotatory inertia and shear deformations. Critical speed for which a resonance effect occurs in the system is obtained. Further, the displacement of the plate is shown graphically for several values of the parameters included. The results are also compared with those from the classical thin plate theory.

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