Mechanics of Composite Materials

, Volume 51, Issue 5, pp 581–592 | Cite as

Vibroacoustic Response of a Double-Walled Cylindrical FGM Shell with a Porous Sandwiched Layer

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The transmission loss of sound through a cylindrical structure whose walls sandwich a layer of porous material is predicted on the basis of the classical shell theory for shells made of functionally graded materials (FGMs). FGM shells composed of metal and ceramic, with three different distributions (power-law, sigmoid, or exponential) of their volume fractions across the wall thickness, are considered. The porous layer is modeled as a fluid with equivalent properties. The transmission loss through the multilayered structure is obtained analytically in a broad frequency band. To validate the results found, they are compared with some known ones. The effects of variation in the volume fractions of materials are also studied.

Keywords

transmission loss porous material cylindrical FGM shell 
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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Department of Mechanical Engineering, Yadegar-e-Imam Khomeini (RAH) BranchIslamic Azad UniversityTehranIran
  2. 2.Department of Mechanical EngineeringIran University of Science and TechnologyTehranIran

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