Computational and theoretical investigation of acoustical and vibrational properties of rigid thin material

Computational and theoretical investigation of acoustical and vibrational properties of rigid thin fiberglass material was carried out for different boundary conditions. Fiberglass materials could be utilised for applications ranging from aerospace industry and automotive industry to building and construction industry. The theory of the plate vibration and acoustic radiation were applied to predict the deflection of the thin fibreglass material and sound radiation efficiency at different locations on its surface while study-controlled equation of motion known as Kirchhoff thin plate theory was applied for COMSOL simulation of thin material to determine the deflection of the plate and to obtain stress distribution, velocity contour, displacement, and acoustic pressure at first resonance of the material. The results of this paper show that thin fiberglass material could be applied to sandwich building structures to form panels in order to attenuate airborne sound and to lower noise transmission of structural borne sound, to cover noise barrier to make them more sustainable and weather resistant, to dampen the vibration of machines, and to reduce the structural vibration of buildings.