New decay results for Timoshenko system in the light of the second spectrum of frequency with infinite memory and nonlinear damping of variable exponent type

Article type: Research Article

Authors: Al-Mahdi, Adel M.^{a; b; *}

Affiliations: [a] The Preparatory Year Program, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia | [b] The Interdisciplinary Research Center in Construction and Building Materials, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

Correspondence: [*] Corresponding author. E-mail: almahdi@kfupm.edu.sa.

Abstract: In this study, we consider a one-dimensional Timoshenko system with two damping terms in the context of the second frequency spectrum. One damping is viscoelastic with infinite memory, while the other is a non-linear frictional damping of variable exponent type. These damping terms are simultaneously and complementary acting on the shear force in the domain. We establish, for the first time to the best of our knowledge, explicit and general energy decay rates for this system with infinite memory. We use Sobolev embedding and the multiplier approach to get our decay results. These results generalize and improve some earlier related results in the literature.

Keywords: Timoshenko system, second frequency spectrum, multiplier method, infinite memory, exponential and polynomial decay, variable exponents

DOI: 10.3233/ASY-231892

Journal: Asymptotic Analysis, vol. 138, no. 1-2, pp. 101-133, 2024