Dynamic Response of a Viscoelastic FG Beam under Axial Compression and Moving Harmonic Loads

Abstract

This study investigates dynamic response of a viscoelastic FG beam under axial compression and moving harmonic loads. The Mori–Tanaka homogenization approach is used to evaluate the thickness-wise effective properties of the FG beam based on a power-law distribution. The Kelvin–Voigt model is used to represent viscoelastic damping in the beam. The governing equations of motion are established using FEM. A parametric study is performed to investigate the effects of material distribution, damping, convoy velocity, axial compressive force, inter - load spacing, and excitation frequency on the dynamic response. Numerical simulations demonstrate that these parameters have a pronounced effect on the dynamic deflection response of FG beams.