Autor: Haddar, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Dynamic behavior of a rotor supported by angular ball bearings
Autorzy:: Abbes, M. S.
Hentati, T.
Maatar, M.
Fakhfakh, T.
Haddar, M.
Powiązania:: https://bibliotekanauki.pl/articles/327818.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:: łożysko kulkowe skośne
wirnik
analiza dynamiczna
angular ball bearing
rotor
dynamic analysis
bearing interaction
Opis:: The wide range and large scale usage of rolling bearings indicates their necessity and vital contribution to the performance of modern industries. In this paper, a non linear model, predicting mechanical behavior of the loaded angular ball bearing, have been developed. The dynamic behavior of a rotor supported by two angular ball bearings is analyzed. The finite element method is used and the rotor is decritizied on beam elements. A mathematical modal taking account different sources of non linearity: the Hertzian contact force and the action of all balls on the bearings inner races, is developed. The Newmark algorithm coupled with Newton Raphson iterative method is used to solve the non linear differential equation iteratively.
Źródło:: Diagnostyka; 2009, 3(51); 3-8
1641-6414
2449-5220
Pojawia się w:: Diagnostyka
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Vibro-acoustic analysis of laminated double glazing using the force identification method
Autorzy:: Ben Jdidia, M
Akrout, A
Tounsi, D
Fakhfakh, T.
Haddar, M.
Powiązania:: https://bibliotekanauki.pl/articles/949211.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: fluid-structure interaction
thin-film laminated plate
ICA
excitation force
Kurtosis
Opis:: This paper presents a procedure for identifying wave forms and excitation frequencies of some forces applied on a given complex fluid-structure coupled system by using only its vibro-acoustic response. The considered concept is called the Independent Component Analysis (ICA) which is based on the Blind Source Separation (BSS). In this work, the ICA method is exploited in order to determine the excitation force applied to a thin-film laminated double glazing system enclosing a thin fluid cavity and limited by an elastic joint. The dynamic response of the studied fluid-structure coupled system is determined by finite element discretization and minimization of the homogenized energy functional of the coupled problem. This response will serve as the input for the ICA algorithm in order to extract the applied excitation.
Źródło:: Journal of Theoretical and Applied Mechanics; 2014, 52, 4; 895-904
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Dynamic response of a spur gear system with uncertain parameters
Autorzy:: Guerine, A.
Hami, A. E.
Walha, L.
Fakhfakh, T.
Haddar, M.
Powiązania:: https://bibliotekanauki.pl/articles/280323.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: uncertainty
spur gear system
polynomial chaos approach
gear parameters
Opis:: In this paper, we propose a new approach for taking into account uncertainties based on the projection on polynomial chaos. The new approach is used to determine the dynamic response of a spur gear system with uncertainty associated to gear system parameters. The simulation results are obtained by the polynomial chaos approach for dynamic analysis under uncertainty. The proposed approach is an efficient probabilistic tool for uncertainty propagation. It has been found to be an interesting alternative to the parametric studies. The polynomial chaos results are compared with Monte Carlo simulations.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 3; 1039-1049
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Effect of Liner Characteristics on the Acoustic Performance of Duct Systems
Autorzy:: Othmani, C.
Hentati, T.
Taktak, M.
Elnady, T.
Fakhfakh, T.
Haddar, M.
Powiązania:: https://bibliotekanauki.pl/articles/176887.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: porous material
perforated plate
duct system
scattering matrix
acoustic attenuation
Opis:: Porous materials are used in many vibro-acoustic applications. Different models describe their performance according to material’s intrinsic characteristics. In this paper, an evaluation of the effect of the porous and geometrical parameters of a liner on the acoustic power attenuation of an axisymmetric lined duct was performed using multimodal scattering matrix. The studied liner is composed by a porous material covered by a perforated plate. Empirical and phenomenal models are used to calculate the acoustic impedance of the studied liner. The later is used as an input to evaluate the duct attenuation. By varying the values of each parameter, its influence is observed, discussed and deduced.
Źródło:: Archives of Acoustics; 2015, 40, 1; 117-127
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

Artykuł

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