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http://dx.doi.org/10.5050/KSNVE.2012.22.5.437

Force Identification and Sound Prediction of a Reciprocating Compressor for a Refrigerator  

Kim, Sang-Tae (부산대학교 대학원 기계공학부)
Jeon, Gyeoung-Jin (부산대학교 대학원 기계공학부)
Jeong, Weui-Bong (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.22, no.5, 2012 , pp. 437-443 More about this Journal
Abstract
In this paper, the hybrid method to identify the exciting forces and radiated noise generated from the reciprocating compressor was presented. In order to identify the exciting force, both the acceleration data measured at the compressor shell and numerical finite element model for the full set of compressor were used simultaneously. Applying the identified exciting forces to the numerical model, the velocity responses of all nodes at the shell were predicted. Finally the radiated noises from the vibrating shell were predicted by using the direct boundary element acoustic analysis. For precise numerical modeling, the stiffness of rubber mounts and body springs were identified experimentally from the natural frequencies measured by impact testing. The error of over-all sound pressure level between predicted noise and measured noise was about 2.9 dB.
Keywords
Reciprocating Compressor; Exciting Force; Source Identification; Radiated Noise;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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