Partial enclosures are a very common way to reduce noise emissions from machinery. However, partial enclosures exhibit complex acoustic behavior that is difficult to predict. The boundary element method (BEM) was used to model the airborne path of a partial enclosure. Simulation results were compared to measurement with good agreement. Special attention is given to the determination of negative insertion loss. It is demonstrated that the enclosure insertion loss will be negative at the Helmholtz frequencies for the enclosure.
Simulation of Airborne Path Attenuation of Partial Enclosures
Sae Technical Papers
SAE 2011 Noise and Vibration Conference and Exhibition ; 2011
2011-05-17
Conference paper
English
Simulation of airborne path attenuation of partial enclosures
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