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《Noise and Vibration Control》 2009-03
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Analysis of Vibration-Acoustic Coupled Characteristics of Ballmill Cylinder

LIU Zhi-hong,YI Chui-jie,LIANG Sen,LI Xuan(Qindao Technology University,Qingdao Shangdong266033,China)  
Ballmill is a dominant noise source of power plant.Its noise is mainly resulted from the structural vibration of the rolling cylinder of the ballmill.To reduce structure vibration noise,ANSYS and SYSNOISE FEM codes,involving the analysis of acoustic-structural coupling effect,are employed for the analysis of acoustic and vibration characteristics of the rolling cylinder.Characteristics of vibration modes of the rolling cylinder and sound modes of the structure and their sound-vibration coupling effect are elaborated.And the structural modes,which have large contributions to the noise radiation effect,are extracted.The results are of important significance in the analysis of noise mechanism and noise control of the ballmill,and in the design of new low-noise-ballmill.
【CateGory Index】: TD453
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