Si segnala il seguente seminario a tutti gli interessati.
Lunedì 3 Novembre 2025, ore 14:30.
Aula Seminari VI Piano, Dipartimento di Matematica, Politecnico di Milano.
Speaker: Kais Ammari, University of Monastir.
Title: Degenerate Damping in Interacting Elastic Systems.
Abstract:
We study the regularity and stability of coupled elastic systems subject to distinct damping mechanisms: one
acting through the average velocity and another via a fractional power of the elastic operator. The damping matrix is
degenerate, meaning that dissipation does not affect all components equally.
Using a frequency-domain approach based on resolvent estimates, we describe how this degeneracy influences the
semigroup regularity and the decay of solutions. The obtained results are shown to be optimal and relevant for applications
in structural mechanics and vibration control.