INFLUENCE OF THE VISCOTHERMAL EFFECTS ON THE VIBROACOUSTIC BEHAVIOR OF A DOUBLE PLATES SYSTEM | ||||
The International Conference on Applied Mechanics and Mechanical Engineering | ||||
Article 122, Volume 13, 13th International Conference on Applied Mechanics and Mechanical Engineering., May 2008, Page 68-80 PDF (387.97 K) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/amme.2008.39745 | ||||
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Authors | ||||
AKROUT A.1; KARRA C.2; HAMMAMI L.2; HADDAR M.3 | ||||
1Graduate student, Mechanics Modelling and Production Research Unit. National School of Engineers of Sfax, Tunisia. | ||||
2Associate professor, Mechanics Modelling and Production Research Unit. National School of Engineers of Sfax, Tunisia. | ||||
3Professor, Mechanics Modelling and Production Research Unit. National School of Engineers of Sfax, Tunisia. | ||||
Abstract | ||||
ABSTRACT In this work, a numerical modeling to study the vibro-acoustic behavior of a double plate system (such as double glazing system) taking into account of viscosity and the thermal conductivity of the fluid between the two plates in the acoustic equations, is presented. The dynamic equations of the coupled system are established. To solve these equations, a variational formulation for the fluid and the two plates is developed. The discretization by the finite element method of this variational formulation gives after minimization a symmetrical coupled matrix system with nonlinear aspect. An iterative procedure is derived to determine the eigenmodes of the coupled system. The modal approach is adopted to determine the vibro-acoustic system’s response which numerical results show the importance of the viscothermal effects in the case of thin fluid layers. | ||||
Keywords | ||||
Double plate; vibro-acoustic behaviour; viscothermal fluid layer; Finite Element | ||||
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