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Edge stiffness
effects on thin-film laminated double glazing system
dynamical behavior by the operational modal analysis
Ali Akrout, Mariem Miladi Chaabane, Lotfi Hammami and Mohamed Haddar |
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Vol. 7 (2012), No. 8-9, 837–859
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Abstract |
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We apply operational modal analysis (OMA) to determine the eigenfrequencies and the eigenmode shapes of a thin-film laminated double glazing system. For this purpose, the dynamic behaviors of both a laminate alone and a coupled system (double-wall structure) for specific boundary conditions are investigated. Here, the laminated plate which is composed of two elastic skins joined with an adhesive ultra-thin film is bonded by an elastic joint. Thus, two configurations of the thin-film laminated glass plate elastic boundary conditions are considered. The first one assumes that the structure is bonded by a translational stiffness (linear springs). In the second one, besides the translational stiffness, a rotational stiffness (angular springs) is introduced in order to improve the developed model. The modal recombination results of a thin-film laminated glass plate as well as those of the thin-film laminated double glazing system are presented and compared to the estimated modes achieved by OMA. Since a good agreement is obtained, the OMA technique can be used to determine the modal parameters by considering the experimental vibratory responses of the studied system. In addition, the vibration’s amplitude of two laminated glass plates linked from edge to edge with both linear and angular springs can be much reduced compared to the one of the same structure bonded only by linear springs. |
Keywords
thin-film laminated double glazing, rotational stiffness,
translational stiffness, operational modal analysis, blind
source separation, eigenmodes
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Milestones
Received: 5 June 2012
Revised: 3 October 2012
Accepted: 16 October 2012
Published: 23 January 2013
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Authors |
| Ali Akrout | |
| Mechanical Engineering
Department National School of Engineers of Sfax Unit of Mechanics, Modelling and Manufacturing (U2MP) BP. 1173 3038 Sfax Tunisia |
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| Mariem Miladi Chaabane | |
| Mechanical Engineering
Department National School of Engineers of Sfax Unit of Mechanics, Modelling and Manufacturing (U2MP) BP. 1173 3038 Sfax Tunisia |
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| Lotfi Hammami | |
| Mechanical Engineering
Department National School of Engineers of Sfax Unit of Mechanics, Modelling and Manufacturing (U2MP) BP. 1173 3038 Sfax Tunisia |
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| Mohamed Haddar | |
| Mechanical Engineering
Departement National Engineering School of Sfax Unit of Mechanics, Modelling and Manufacturing (U2MP) BP. 1173 3038 Sfax Tunisia |
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