Acoustic radiation from cylindrical shells stiffened by two sets of rings, with constrained layer damping (CLD), is investigated theoretically. The governing equations of motion for the cylindrical shell with CLD are described on the basis of Sanders thin shell theory. Two sets of rings interact with the host cylindrical shell only through the normal line forces. The solutions are derived in the wavenumber domain and the stationary phase method is used to find an analytical expression of the far-field sound pressure. The effects of the viscoelastic material core, constrained layer and multiple loadings on sound pressure are illustrated. The helical wave spectra of sound pressure and the radial displacement clearly show the vibrational and acoustic characteristics of the stiffened cylindrical shell with CLD. It is shown that CLD can effectively suppress the radial vibration and reduce acoustic radiation.
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February 2013
Research-Article
Acoustic Radiation From Stiffened Cylindrical Shells With Constrained Layer Damping
Xiongtao Cao,
Xiongtao Cao
1
e-mail: caolin1324@126.com
State Key Laboratory of Mechanical
System and Vibration,
System and Vibration,
Shanghai Jiaotong University
,Dongchuan Road 800
,200240
China
1Corresponding author.
Search for other works by this author on:
Hongxing Hua,
Hongxing Hua
State Key Laboratory of Mechanical
System and Vibration,
System and Vibration,
Shanghai Jiaotong University
,Dongchuan Road 800
,200240
China
Search for other works by this author on:
Zhenguo Zhang
Zhenguo Zhang
State Key Laboratory of Mechanical
System and Vibration,
System and Vibration,
Shanghai Jiaotong University
,Dongchuan Road 800
,200240
China
Search for other works by this author on:
Xiongtao Cao
e-mail: caolin1324@126.com
State Key Laboratory of Mechanical
System and Vibration,
System and Vibration,
Shanghai Jiaotong University
,Dongchuan Road 800
,200240
China
Hongxing Hua
State Key Laboratory of Mechanical
System and Vibration,
System and Vibration,
Shanghai Jiaotong University
,Dongchuan Road 800
,200240
China
Zhenguo Zhang
State Key Laboratory of Mechanical
System and Vibration,
System and Vibration,
Shanghai Jiaotong University
,Dongchuan Road 800
,200240
China
1Corresponding author.
Contributed by the Design Engineering Division of ASME for publication in the Journal of Vibration and Acoustics. Manuscript received May 29, 2011; final manuscript received June 25, 2012; published online February 4, 2013. Assoc. Editor: Michael Brennan.
J. Vib. Acoust. Feb 2013, 135(1): 011005 (14 pages)
Published Online: February 4, 2013
Article history
Received:
May 29, 2011
Revision Received:
June 25, 2012
Citation
Cao, X., Hua, H., and Zhang, Z. (February 4, 2013). "Acoustic Radiation From Stiffened Cylindrical Shells With Constrained Layer Damping." ASME. J. Vib. Acoust. February 2013; 135(1): 011005. https://doi.org/10.1115/1.4007427
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