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http://dx.doi.org/10.5050/KSNVE.2014.24.8.628

Analysis of Sources and Contribution for the Radiated Noise of Drum-type Washing Machine  

Kim, Ji Man (School of Mechanical Engineering, Pusan National University)
Jung, Byung Kyoo (School of Mechanical Engineering, Pusan National University)
Heo, So Jung (LG Electronics Inc.)
Ahn, Se Jin (School of Mechanical&Electrical Engineering, Uiduk University)
Jeong, Weui Bong (School of Mechanical Engineering, Pusan National University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.8, 2014 , pp. 628-635 More about this Journal
Abstract
The procedure to estimate the sources of noise and vibrations in a typical drum-type washing machine was presented. The sources should be identified to predict the radiated noise with computational model of structure. Source identification techniques based on singular decomposition were implemented using the measured signals of accelerometers and microphones. The finite element analysis and indirect boundary element analysis were implemented to predict the structural vibrations and the acoustic pressures at the field points. The predicted results by only structural sources were compared with those by both structural and acoustical sources. It was verified that not only the structural-borne source but also air-borne source should be considered to predict the radiated noise with better accuracy. The contribution analysis with respect to the transfer path was also preformed.
Keywords
Drum-type Washing Machine; Structure Borne Noise; Air Borne Noise; Radiated Noise; Contribution Analysis; Force Identification;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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