Volume 14, Issue 4 (7-2014)
Modares Mechanical Engineering 2014, 14(4): 147-157 |
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Talebi R, Shojaeifard M H, Ahmadi R, Gheybi M R. Vibro-acoustic study on transverse-isotropic thick-walled cylindrical shells considering high shear deformation theory using Hamilton principle. Modares Mechanical Engineering 2014; 14 (4) :147-157
URL: http://mme.modares.ac.ir/article-15-2471-en.html
URL: http://mme.modares.ac.ir/article-15-2471-en.html
Abstract: (5731 Views)
The objective of this paper is representation an analytical solution to calculate sound transmission loss (TL) of infinite thick transverse-isotropic cylindrical shell immersed in a fluid medium with an uniform external airflow and contains internal fluids where external sidewall of the shell excited by an oblique plane wave. In order to derive the governing equations the third-order shear deformation theory (TSDT) is used. Also, equation of motion of shell is obtained using Hamilton's principle. With solving shell vibration equations and acoustic wave equations simultaneously, the exact solution for TL is obtained. Transmission loss resultant from this solution is compared with those of other authors. The results also indicate that TSDT is more powerful than FSDT and CST, especially in high frequency and less R/h.
Keywords: Sound transmission loss, Third-order shear deformation theory, Hamilton's principle, Thick Cylindrical Shell, Transverse-isotropic
Article Type: Research Article |
Subject:
Vibration|Sonic Flow|Analytical Methods
Received: 2013/10/13 | Accepted: 2013/11/27 | Published: 2014/05/31
Received: 2013/10/13 | Accepted: 2013/11/27 | Published: 2014/05/31
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