General condition for exponential stability of thermoelastic Bresse systems with Cattaneo's law

Abstract

In this paper, we give a new and more general sufficient condition for exponential stability of thermoelastic Bresse systems with heat flux given by Cattaneo's law acting in shear and longitudinal motion equations. This condition, which we also prove to be necessary in some special cases, is given by a relation between the constants of the system and generalizes the wellknown equal wave speed condition.