Transmission path analysis of noise and vibration in a rotary compressor by statistical energy analysis
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The hermetic rotary compressor is one of the most important components of an air conditioning system since it has a great effect on both the performance and the noise and vibration of the system. Noise and vibration occurs due to gas pulsation during the compression process and to unbalanced dynamic force. In order to reduce noise and vibration, it is necessary to identify their sources and transmission path and effectively control them. Many approaches have been tried in order to identify the noise transmission path of a compressor. However, identification has proven to be difficult since the characteristics of compressor noise are complicated due to the interaction of the compressor parts and gas pulsation. In this study, the statistical energy analysis has been used to trace the energy flow in the compressor and to identify the transmission paths from the noise source to the exterior sound field.
Key WordsRotary Compressor SEA Modal Density Damping Loss Factor Coupling Loss Factor Power Spectrum Point Mobility
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- AutoSEA Manual, 2001, SEA Theory and Q & A.Google Scholar
- Beranek, L. L., 1992, Noise and Vibration Control Engineering,John Wiley & Sons.Google Scholar
- Clarkson, B. L., 1981, “Experimental Determination of Modal Densities and Loss Factors of Flat Plate and Cylinders,”Journal of Sound and Vibration, pp. 535–549.Google Scholar
- Fahy, F, 1985, “Sound and Structural Vibration : Radiation, Transmission and Response,” Academic Press.Google Scholar
- Heckl, M. and Lewit, M., 1994, “Statistical Energy Analysis as a Tool for Quantifying Sound and Vibration Transmission Paths,” Statistical Energy Analysis : An Overview, with Applications in Structural Dynamics, Cambridge Univ. Press. pp. 19–34.Google Scholar
- Hyun, M. H. and Kim, S. S., 1996, “A Study on the Transmission Path of Shipboard Structure-Borne Noise Using SEA,”Journal of the Korean society for Noise and Vibration Engineering, Vol. 6, No. 5, pp. 575–585.Google Scholar
- Kim, K.J. and Choi, S. K., 1999, “Experimental Methods for the measurement of Damping Loss Factors,”Journal of the Korean society for Noise and Vibration Engineering, Vol. 9, No. 6, pp. 1187–1192.Google Scholar
- Kim, K. J., Kim, J. T., Yoon, T. J. and Park, B. H., 2002, “Added Mass Effect on Structural Junction : Comparison of SEA Experimental Results with Analysis,”2002 Conference of the Korean society for Noise and Vibration Engineering, pp. 359–364.Google Scholar
- Lyon, R. H. and Dejong, R. G., 1995, Theroy and Application of Statistical Energy Analysis, Butterworth-Heinemann, Boston.Google Scholar
- Lyon, R. H., 1975, “Statistical Energy Analysis of Dynamic System : Theory and Application,” Cambridge, Mass.: MIT Press.Google Scholar
- Rockwood, W. G., 2000, Noise and Vibration Characterization and Statitical Energy Analysis of a Scroll Compressor. 15th Purdue Conf. pp. 331–336.Google Scholar