Well-posedness and stability of abstract thermoelastic delayed systems

Abstract

In this paper, we consider a stabilization problem of a generalized thermoelastic system (the so called $\alpha -\beta$ system) with delay in a part of the coupled system. For each case, we prove the well-posedness of the corresponding system using semigroup approach, then under some sufficient conditions we establish some results of exponential and polynomial stability of the system through a frequency-domain approach. The results are applied to concrete examples in thermoelasticity.