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Some well-posedness and general stability results in Timoshenko systems with infinite memory and distributed time delay

Abstract : In this paper, we consider a Timoshenko system in 1-dimenstional bounded domain with infinite memory and distributed time delay both acting on the equation of the rotation angle. Without any restriction on the speeds of wave propagation and under appropriate assumptions on the infinite memory and distributed time delay convolutions kernels, we prove, first, the well-posedness and, second, the stability of the system, where we present some decay estimates depending on the equal-speed propagation case and the opposite one. The obtained decay rates depend on the growths of the memory and delay kernels at infinity. In the non equal-speed case, the decay rates depends also on the regularity of initial data. Our stability results show that the only dissipation resulting from the infinite memory guarantees the asymptotic stability of the system regardless to the speeds of wave propagation and in spite of the presence of a distributed time delay. Applications of our approach to specific coupled Timoshenko-heat and Timoshenko-wave systems as well as the discrete time delay case are also presented.
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Aissa Guesmia. Some well-posedness and general stability results in Timoshenko systems with infinite memory and distributed time delay. Journal of Mathematical Physics, American Institute of Physics (AIP), 2014, 55 (8), ⟨10.1063/1.4891489⟩. ⟨hal-01281853⟩

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