Vibroacoustic analysis of un-baffled layered composite plate under thermal environment

The current article deals with numerical study on the sound radiation characteristics of layered composite plates in a thermal environment and subjected to harmonic point excitations. The first-order shear deformation theory is used to model the shell panels. The Finite element method (FEM) is used...

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Bibliographic Details
Main Authors: Agarwal, Shivam, Dash, Binita, Saini, Prakhar, Sharma, Nitin, Ranjan Mahapatra, Trupti, Kumar Panda, Subrata
Format: Conference Proceeding
Language:English
Subjects:
Coupled FEM-BEM
Laminated composite plate
Thermal environment
Vibroacoustic analysis
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Summary:The current article deals with numerical study on the sound radiation characteristics of layered composite plates in a thermal environment and subjected to harmonic point excitations. The first-order shear deformation theory is used to model the shell panels. The Finite element method (FEM) is used to perform the modal analysis on the plates using ANSYS commercial software package followed by the acoustic analysis performed using boundary element method (BEM) via LMS Virtual.Lab. The critical buckling temperature, natural frequency and the sound power radiated by the vibrating plate is compared with the published data. The impact of elevated temperature load, the modular ratio, support conditions, aspect ratio and on the thermo-acoustic responses of the vibrating layered composite plates is investigated. The thermal environment greatly influences the acoustic radiation responses. The radiation efficiency of the plate is influenced more significantly in thermal environment by the modular ratio in the low frequency domain
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2020.04.415