Dynamic Viscoelastic Effects on Sound Wave Diffraction by Spherical and Cylindrical Shells Submerged in and Filled with Viscous Compressible Fluids
An analysis for sound scattering by fluid-filled spherical and cylindrical viscoelastic shells immersed in viscous fluids is outlined. The dynamic viscoelastic properties of the scatterer and the viscosity of the surrounding and core fluids are rigorously taken into account in the solution of the ac...
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| Format: | Article |
| Language: | English |
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Wiley
2003-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2003/434612 |
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| author | Seyyed M. Hasheminejad Naemeh Safari |
| author_facet | Seyyed M. Hasheminejad Naemeh Safari |
| author_sort | Seyyed M. Hasheminejad |
| collection | DOAJ |
| description | An analysis for sound scattering by fluid-filled spherical and cylindrical viscoelastic shells immersed in viscous fluids is outlined. The dynamic viscoelastic properties of the scatterer and the viscosity of the surrounding and core fluids are rigorously taken into account in the solution of the acoustic scattering problem. The novel features of Havriliak-Negami model for viscoelastic material dynamic behaviour description along with the appropriate wave-harmonic field expansions and the pertinent boundary conditions are employed to develop a closed-form solution in form of infinite series. Subsequently, the associated acoustic field quantities such as the scattered far-field pressure directivity pattern, form function amplitude, transmitted intensity ratio, and acoustic force magnitude are evaluated for given sets of medium physical properties. Numerical results clearly indicate that in addition to the traditional fluid viscosity-related mechanisms, the dynamic viscoelastic properties of the shell material as well as its thickness can be of major significance in sound scattering. Limiting cases are examined and fair agreements with well-known solutions are established. |
| format | Article |
| id | doaj-art-769c2757a117488da246371f22b31bba |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2003-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-769c2757a117488da246371f22b31bba2025-02-03T05:53:41ZengWileyShock and Vibration1070-96221875-92032003-01-01105-633936310.1155/2003/434612Dynamic Viscoelastic Effects on Sound Wave Diffraction by Spherical and Cylindrical Shells Submerged in and Filled with Viscous Compressible FluidsSeyyed M. Hasheminejad0Naemeh Safari1Department of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran 16844, IranDepartment of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran 16844, IranAn analysis for sound scattering by fluid-filled spherical and cylindrical viscoelastic shells immersed in viscous fluids is outlined. The dynamic viscoelastic properties of the scatterer and the viscosity of the surrounding and core fluids are rigorously taken into account in the solution of the acoustic scattering problem. The novel features of Havriliak-Negami model for viscoelastic material dynamic behaviour description along with the appropriate wave-harmonic field expansions and the pertinent boundary conditions are employed to develop a closed-form solution in form of infinite series. Subsequently, the associated acoustic field quantities such as the scattered far-field pressure directivity pattern, form function amplitude, transmitted intensity ratio, and acoustic force magnitude are evaluated for given sets of medium physical properties. Numerical results clearly indicate that in addition to the traditional fluid viscosity-related mechanisms, the dynamic viscoelastic properties of the shell material as well as its thickness can be of major significance in sound scattering. Limiting cases are examined and fair agreements with well-known solutions are established.http://dx.doi.org/10.1155/2003/434612 |
| spellingShingle | Seyyed M. Hasheminejad Naemeh Safari Dynamic Viscoelastic Effects on Sound Wave Diffraction by Spherical and Cylindrical Shells Submerged in and Filled with Viscous Compressible Fluids Shock and Vibration |
| title | Dynamic Viscoelastic Effects on Sound Wave Diffraction by Spherical and Cylindrical Shells Submerged in and Filled with Viscous Compressible Fluids |
| title_full | Dynamic Viscoelastic Effects on Sound Wave Diffraction by Spherical and Cylindrical Shells Submerged in and Filled with Viscous Compressible Fluids |
| title_fullStr | Dynamic Viscoelastic Effects on Sound Wave Diffraction by Spherical and Cylindrical Shells Submerged in and Filled with Viscous Compressible Fluids |
| title_full_unstemmed | Dynamic Viscoelastic Effects on Sound Wave Diffraction by Spherical and Cylindrical Shells Submerged in and Filled with Viscous Compressible Fluids |
| title_short | Dynamic Viscoelastic Effects on Sound Wave Diffraction by Spherical and Cylindrical Shells Submerged in and Filled with Viscous Compressible Fluids |
| title_sort | dynamic viscoelastic effects on sound wave diffraction by spherical and cylindrical shells submerged in and filled with viscous compressible fluids |
| url | http://dx.doi.org/10.1155/2003/434612 |
| work_keys_str_mv | AT seyyedmhasheminejad dynamicviscoelasticeffectsonsoundwavediffractionbysphericalandcylindricalshellssubmergedinandfilledwithviscouscompressiblefluids AT naemehsafari dynamicviscoelasticeffectsonsoundwavediffractionbysphericalandcylindricalshellssubmergedinandfilledwithviscouscompressiblefluids |