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http://dx.doi.org/10.5050/KSNVE.2011.21.8.733

Prediction and Reduction of Transient Vibration of Piping System for a Rotary Compressor  

Ryu, Sang-Mo (부산대학교 대학원 기계공학부)
Jeong, Weui-Bong (부산대학교 기계공학부)
Han, Hyung-Suk (국방기술품질원)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.21, no.8, 2011 , pp. 733-740 More about this Journal
Abstract
This paper deals with the process to identify the transient exciting force generated from a rotary compressor. The compressor was assumed to be a rigid body. The equation of motion of a rigid compressor supported by three mounts was derived with 6 degree-of-freedom. The exciting forces at the center of mass of the compressor were estimated from the acceleration data measured at compressor shell. Compressor-pipe system was modeled numerically. The accelerations of compressor and pipe were predicted numerically by using the estimated exciting force. A new shape of pipe model was proposed to reduce the vibration. In the prediction by the method in this paper, the maximum acceleration of the pipe could be reduced by 53.7 % at the steady-state and by 12 % at the transient process. In the real experiments, the maximum acceleration of the pipe was reduced by 54.2 % at steady-state and 14.7 % at the transient process. It was verified that the numerical results showed good agreement with experimental results.
Keywords
Rotary Compressor; Piping System; Exciting Force; Vibration; Time Analysis; Experimental Identification;
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Times Cited By KSCI : 7  (Citation Analysis)
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