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Published on: August 1, 2014
A mobility based vibroacoustic energy transmission simulation into an enclosure through a double-wall panel
Atanu Sahu1, Partha Bhattacharya1, Arup Guha Niyogi1
1Department of Civil Engineering, Jadavpur University, 188, Raja S. C. Mallik Road, Kolkata 700032, India atanush@gmail.com, p_bhatta@daad-alumni.de, agniyogi@civil.jdvu.ac.in.
Abstract:
Double-wall panels are known for their superior sound insulation properties over single wall panels as a sound barrier. The sound transmission phenomenon through a double-wall structure is a complex process involving vibroacoustic interaction between structural panels, the air-cushion in between, and the secondary acoustic domain. It is in this context a versatile and a fully coupled technique based on the finite-element-boundary element model is developed that enables estimation of sound transfer through a double-wall panel into an adjacent enclosure while satisfying the displacement compatibility across the interface. The contribution of individual components in the transmitted energy is identified through numerical simulations.
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