Autor: Chaabane, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effects of viscoelastic and porous materials on sound transmission of multilayer systems
Autorzy:: Felhi, H.
Trabelsi, H.
Taktak, M.
Chaabane, M.
Haddar, M.
Powiązania:: https://bibliotekanauki.pl/articles/280164.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: porous material
multilayer system
transmission loss
transfer matrix
Opis:: Multilayer structures allow obtaining good performance in acoustic insulation to eliminate unwanted noise in the medium and high frequencies in many applications such as building and transport industry. In this paper, the sound transmission of multilayer systems is studied using the Transfer Matrix Method (TMM). The studied multi-layered panels include elastic, viscoelastic and porous materials. Several configurations of multilayer systems are studied, and their corresponding transmission loss T L is computed. Also, the effects of porous material characteristics are studied to evaluate the impact of each parameter.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 4; 961-976
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Guided wave propagation in thermal media through the semi analytical finite element method
Autorzy:: Bouchoucha, F.
Chaabane, S.
Ichchou, M. N.
Haddar, M.
Powiązania:: https://bibliotekanauki.pl/articles/281275.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: semi analytical finite element
thermal media
dispersion
velocity
Opis:: In this paper, the issue of the estimation of wave propagation characteristics in thermal media is dealt with. A formulation, named the Thermal Semi Analytical Finite Element, based on the semi analytical finite element approach coupled with the thermal effect is offered. Temperature variations affect the mechanical properties of the waveguide. The question of dispersion curves and group velocities is studied. This study is expected to be of use in the sensitivity analysis of guided waves for wave propagation in thermal environment. Comparisons between numerical and analytical results are given to show the effectiveness of the proposed approach.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 1; 285-293
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Robust controlled positive delayed systems with interval parameter uncertainties: A delay uniform decomposition approach
Autorzy:: Elloumi, W.
Mehdi, D.
Chaabane, M.
Powiązania:: https://bibliotekanauki.pl/articles/330766.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: delay system
robust stabilization
positive system
parametric constraints
delay decomposition
LMIs
układ z opóźnieniem
stabilizacja odporna
układ dodatni
ograniczenia parametryczne
Opis:: This paper is concerned with robust stabilization of continuous linear positive time-delay systems with parametric uncertainties. The delay considered in this work is a bounded time-varying function. Previously, we have demonstrated that the equidistant delay-decomposition technique is less conservative when it is applied to linear positive time-delay systems. Thus, we use simply a delay bi-decomposition in an appropriate Lyapunov–Krasovskii functional. By using classical and partitioned control gains, the state-feedback controllers developed in our work are formulated in terms of linear matrix inequalities. The efficiency of the proposed robust control laws is illustrated with via an example.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2018, 28, 3; 441-450
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Stability and stabilizability of a class of uncertain dynamical systems with delays
Autorzy:: Saadni, M. S.
Chaabane, M.
Mehdi, D.
Powiązania:: https://bibliotekanauki.pl/articles/908527.pdf
Data publikacji:: 2005
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: układ dynamiczny
opóźnienie czasowe
sterowanie odporne
dynamical systems
time-varying delays
time-varying uncertainty
norm-bounded robust stability
robust stabilizability
Opis:: This paper deals with a class of uncertain systems with time-varying delays and norm-bounded uncertainty. The stability and stabilizability of this class of systems are considered. LinearMatrix Inequalities (LMI) delay-dependent sufficient conditions for both stability and stabilizability and their robustness are established.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2005, 15, 3; 321-329
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

Artykuł

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