Analysis of Temperature Change Effect on Dissipation of Energy in Functionally Graded Beams

Abstract

In this paper, an analysis of the energy dissipation in functionally graded beam structures of viscoelastic behaviour under bending is presented with considering the effects of temperature change. There is an obvious need of carrying-out of such analyses because very often various load-bearing beam structures made of functionally graded viscoelastic materials are exposed to temperature changes simultaneously with external mechanical loading during their lifetime. Rheological model with one spring and two viscous components is used for treating the beam viscoelastic behaviour. The energy dissipation analysis accounts for the temperature change by correcting the time-dependent modulus of elasticity. A parametric study is performed. The general trend of the results obtained is that the dissipated energy decreases when the temperature increases.