Autor: Walha, L. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Porous material effect on gearbox vibration and acoustic behavior
Autorzy:: Letaief, M. R.
Walha, L.
Taktak, M.
Chaari, F.
Haddar, M.
Powiązania:: https://bibliotekanauki.pl/articles/281269.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: porous material
gearbox
vibro-acoustic behavior
Opis:: In this paper, we define a resolution method to study the effect of a porous material on vibro-acoustic behavior of a geared transmission. A porous plate is coupled with the gearbox housing cover. The developed model depends on the gearbox characteristic and poroelastic parameters of the porous material. To study the acoustic effect of the housing cover, the acoustic transmission loss is computed by simulating numerically the elastic-porous coupled plate model, and the numerical implementation is performed by directly programming the mixed displacement-pressure formulation. To study the vibration effect, the bearing displacement is computed using a two-stage gear system dynamical model and used as the gearbox cover excitation. Numerical implementation is performed by direct programming of the Leclaire formulation.
Źródło:: Journal of Theoretical and Applied Mechanics; 2017, 55, 4; 1381-1395
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Influence of uncertainty in aerodynamic performance on the dynamic response of a two stage gear system
Autorzy:: Tounsi, M.
Beyaoui, M.
Abboudi, K.
Feki, N.
Walha, L.
Haddar, M.
Powiązania:: https://bibliotekanauki.pl/articles/281135.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: gearbox
uncertainty
power coefficient
random parameter
polynomial chaos
Opis:: In this paper, the nonlinear dynamic response in a wind turbine system is considered and the quantification of uncertainty effects on the variability of this nonlinear response is investigated. Under dynamic conditions, a lumped model with 12 degrees of freedom is proposed taking into account the uncertainty associated to the power coefficient of the input aerodynamic torque. The dynamic response of the two-stage spur gear system is obtained using ODE45 solver of Matlab. The Polynomial Chaos (PC) method is used to introduce the uncertainties on the proposed model. A comparison between the two dynamic responses given by the proposed lumped dynamic model takes into account the uncertainty. It is performed on the existed model without uncertainty. Thus, the efficiency and robustness of the proposed new methodology is evaluated.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 2; 601-612
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

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