TÉCNICA NUMÉRICA DE TPA PARA ANÁLISE VIBROACÚSTICA DE COMPRESSORES HERMÉTICOS
DOI:
https://doi.org/10.26512/ripe.v1i1.20719Keywords:
Hermetic compressor. Noise. TPA. Vibroacoustic.Abstract
The acoustic characteristics of hermetic compressors are critical parameters for the adequacy and acceptance of this product on the market. It is essential to predict the radiated noise by such equipment in the design phase aimed the noise mitigation. In this context, numerical modeling becomes feasible to reduce the cost associated with the manufacture of prototypes and design time. This work describes a methodology of analysis of the vibroacoustic energy trajectory (Transfer Path Analysis -TPA) between the sound source and the receiver, in order to assess the contribution of different paths of propagation. Thus new design changes in order to minimize acoustic noise can be effectively proposed on the basis of the most significant contribution to the receiver. Results are presented using a hermetic compressor modeled by coupling FEM / BEM demonstrating the viability and potential of the proposed methodology.
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