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.
Downloads
References
Gérard, F., Tournour, M., Masri, N. E., Cremers L., Felice M., Selmane A., 2002, “Acoustic Transfer Vectors for Numerical Modeling of Engine Noise”, Sound and Vibration, July.
Guimarães, G. P., 2008, “Desenvolvimento de análise por trajetórias vibroacústicas para aplicação automotiva”, Dissertação de Mestrado, Universidade Federal de Minas Gerais, Belo Horizonte.
Henklein, P., 2006, “Análise de ensaios de desempenho de compressores herméticos durante o transitório”, Dissertação de Mestrado, Universidade Federal de Santa Catarina, Florianópolis
Nunes O., 2005, “Análise Teórica e Experimental do Campo Sonoro Irradiado por um Compressor Hermético”, Dissertação de Mestrado, Faculdade de Engenharia Mecânica, Universidade Estadual de Campinas, Campinas.
Nuñes, I. J. C., Marqui, A. L. L., Nunes, M. A. A., Arruda, J. R. F., 2010, “Metodologia híbrida para estimativa de forças estruturais aplicadas à vibroacútica de compressores herméticos”, VI Congresso Nacional de Engenharia Mecânica, Campina Grande, Paraíba
Padilha, P. E. F., 2006, “Comparação de técnicas de análise de caminhos de transferência vibroacústicos”, Dissertação de Mestrado, Universidade Estadual de Campinas, Campinas.
Tojo, K., Saegusa, S., Machida, S., Hirata, T., Sudo, M., 1980, “Noise reduction of refrigerator compressors” Procedings of the 1980 International Compressor Engeniring Conference at Pardue, pp. 235-242
Virtual.Lab 11 SL1, 2012, “Manual ”“ Online Help”, LMS
Downloads
Published
How to Cite
Issue
Section
License
Given the public access policy of the journal, the use of the published texts is free, with the obligation of recognizing the original authorship and the first publication in this journal. The authors of the published contributions are entirely and exclusively responsible for their contents.
1. The authors authorize the publication of the article in this journal.
2. The authors guarantee that the contribution is original, and take full responsibility for its content in case of impugnation by third parties.
3. The authors guarantee that the contribution is not under evaluation in another journal.
4. The authors keep the copyright and convey to the journal the right of first publication, the work being licensed under a Creative Commons Attribution License-BY.
5. The authors are allowed and stimulated to publicize and distribute their work on-line after the publication in the journal.
6. The authors of the approved works authorize the journal to distribute their content, after publication, for reproduction in content indexes, virtual libraries and similars.
7. The editors reserve the right to make adjustments to the text and to adequate the article to the editorial rules of the journal.
