Electronic Journal Technical Acoustics ISSN 1819-2408

Abdennadher Moez, Fenina Sofiene, Hammami Lotfi, Haddar Mohamed

Double glazing vibroacoustic behaviour

language: English

received 26.06.2004, published 23.02.2005

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ABSTRACT

The dynamic behaviour of a double glazing system requires the modelling dynamic behaviour of panels, air cavity, and fluid structure interaction. The associated energy functional formulation is established. Its discretisation by finite element methods leads to dynamic system equation. Modal approach, based on the decomposition of the modal pressure in a statical pressure and dynamical one, permits the determination of eigenfrequencies and eigenmodes of coupled system and the resolution of dynamical equations projected on the modal basis. Vibratory analysis allows to conclude the existence of two eigenmodes families for which the vibroacoustic coupling between panels and air cavity is absent for the first one and strong for the second one. Moreover, the established dynamic responses of a double glazing system show an important reduction of energy transmitted in comparison with simple panels.

12 pages, 3 figures

Сitation: Abdennadher Moez, Fenina Sofiene, Hammami Lotfi, Haddar Mohamed. Double glazing vibroacoustic behaviour. Electronic Journal “Technical Acoustics”, http://www.ejta.org, 2005, 6.

REFERENCES

		Abdennadher Moez was born in 1976 (in Tunisia), Assistant at the Science Faculty of Gafsa in Tunisia, the topics of the research activities deal with the dynamic structures and mechanical systems, vibroacoustics and fluid structure interaction e-mail: moezabd(at)yahoo.fr
		Fenina Sofiene was born in 1979 (in Tunisia), Assistant at the Preparatory Institute of engineer’s Studies of Nabeul in Tunisia, the topics of the research activities deal with the dynamic structures and mechanical systems, vibroacoustics and fluid structure interaction e-mail: sofienefenina(at)yahoo.fr
		Hammami Lotfi was born in 1961 (in Tunisia), PhD in applied mechanics (1990, French), Assistant Professor at the National School of Engineers of Sfax in Tunisia, the topics of the research activities deal with the dynamic and modelling structures, vibroacoustics and fluid structure interaction e-mail: lotfi.hammami(at)enis.rnu.tn
		Haddar Mohamed was born in 1963 (in Tunisia), PhD in applied mechanics (1991, French), Professor at the National School of Engineers of Sfax in Tunisia, the topics of the research activities deal with the dynamic structures and mechanical systems, vibroacoustics and fluid structure interaction e-mails: Mohamed.haddar(at)enis.rnu.tn, m_haddar(at)voila.fr