Výsledky vyhledávání - "Ahmet Ozkan Ozer"

Long-time dynamics for a fractional piezoelectric system with magnetic effects and Fourier's law

Autor: D. S. Almeida Júnior, M. M. Freitas, Ahmet Ozkan Ozer, A. J. A. Ramos

Publikováno v: Journal of Differential Equations. 280:891-927

In this work, we use a variational approach to model vibrations on a piezoelectric beam with fractional damping depending on a parameter ν ∈ ( 0 , 1 / 2 ) . Magnetic and thermal effects are taken into account via the Maxwell's equations and Fourie

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53ead6000bf68d8fc7fc5bd25185accc
https://doi.org/10.1016/j.jde.2021.01.030

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Stabilization Results for Well-Posed Potential Formulations of a Current-Controlled Piezoelectric Beam and Their Approximations

Autor: Ahmet Ozkan Ozer

Publikováno v: Applied Mathematics & Optimization. 84:877-914

Hysteresis is highly undesired for the vibration control of piezoelectric beams especially in high-precision applications. Current-controlled piezoelectric beams cope with hysteresis substantially in comparison to the voltage-controlled counterparts.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71dd88f8cbaf39872d96dc17d1c8250a
https://doi.org/10.1007/s00245-020-09665-4

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Potential Formulation for Charge or Current-Controlled Piezoelectric Smart Composites and Stabilization Results: Electrostatic Versus Quasi-Static Versus Fully-Dynamic Approaches

Autor: Ahmet Ozkan Ozer

Publikováno v: IEEE Transactions on Automatic Control. 64:989-1002

We consider a less-hysteretic piezoelectric smart composite beam model whose piezoelectric layers are actuated by charge or current only. The governing equations are derived through a consistent variational approach by the thin-compliant layer Rao–

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a04142b421bf3895efdfa79c5cdf464
https://doi.org/10.1109/tac.2018.2836864

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Exponential stabilization of fully dynamic and electrostatic piezoelectric beams with delayed distributed damping feedback

Autor: M. M. Freitas, D. S. Almeida Júnior, Ahmet Ozkan Ozer, J. D. Martins, A. J. A. Ramos

Publikováno v: Zeitschrift für angewandte Mathematik und Physik. 72

Fully dynamic system of equations for a single piezoelectric beam strongly couples the mechanical (longitudinal) vibrations with the total charge distribution across the beam. Unlike the electrostatic (or quasi-static) assumption of Maxwell’s equat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e7641d8155f1db6af5c2429a2b0e4b1
https://doi.org/10.1007/s00033-020-01457-8

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Exponential stability results for the boundary-controlled fully-dynamic piezoelectric beams with various distributed and boundary delays

Autor: Baowei Feng, Ahmet Ozkan Ozer

Publikováno v: Journal of Mathematical Analysis and Applications. 508:125845

We consider an infinite-dimensional model for the longitudinal vibrations of a fully-dynamic piezoelectric beam which strongly couples mechanical vibrations and fully dynamic electromagnetic effects due to Maxwell's equations. The corresponding model

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::717098e4b74beb9ea30ae118bf02c6f6
https://doi.org/10.1016/j.jmaa.2021.125845

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Uniform boundary observability of semi-discrete finite difference approximations of a Rayleigh beam equation with only one boundary observation

Autor: Ahmet Ozkan Ozer

Publikováno v: CDC

First, we study a space-discretized Finite Difference approximation for the well-known Rayleigh beam equation w tt − αw xxtt + Kw xxxx = 0 with hinged boundary conditions. This equation describes transverse vibrations for moderately thick beams. E

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00b907aa420f49db0f0070170599386b
https://doi.org/10.1109/cdc40024.2019.9028954

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Exponential stabilization of a smart piezoelectric composite beam with only one boundary controller ⁎ ⁎This research is supported by the Western Kentucky University startup grant

Autor: Ahmet Ozkan Ozer

Publikováno v: IFAC-PapersOnLine. 51:80-85

Layered smart composite beams involving a piezoelectric layer are traditionally actuated by a voltage source by the extension mechanism. In this paper, we consider only the bending and shear of a cantilevered piezoelectric smart composite beam modele

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e701c4fe3e63b84bd9ea8150b5debf9a
https://doi.org/10.1016/j.ifacol.2018.06.019

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An alternate numerical treatment for nonlinear PDE models of piezoelectric laminates

Autor: Mikhail Khenner, Ahmet Ozkan Ozer

Publikováno v: Active and Passive Smart Structures and Integrated Systems XIII.

When piezoelectric laminates undergo large deformations, exhibiting a nonlinear stress-strain behavior, and the longitudinal vibrations are not neglected, linear models of piezoelectric laminates fail to represent and predict the governing dynamics.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::017a7621467ad46d7a84ea19a0f48be6
https://doi.org/10.1117/12.2514567

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