SOUND SCATTERING FROM A SUBMERGED MULTILAYERED CYLINDRICAL SHELL WITH FUNCTIONALLY GRADIENT MATERIAL PROPERTIES
Publish place: 15th Annual Conference of Mechanical Engineering
Publish Year: 1386
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISME15_132
تاریخ نمایه سازی: 8 فروردین 1386
Abstract:
An exact treatment based on the inherent background coefficients that describe the background amplitudes in the scattered field is employed to investigate the scattering of timeharmonic plane acoustic waves by an arbitrarily thick hollow isotropic functionally graded cylinder submerged in and filled with non-viscous compressible fluids. The mechanical properties of the graded shell are assumed to vary smoothly and continuously with the change of volume concentrations of the constituting materials across the thickness of the shell according to a power law distribution. The original inhomogeneous shell is approximated by a laminate model, for which the solution is expected to gradually approach the exact one as the number of layers increases. The transfer matrix (T-matrix) solution technique, which involves a system global transfer matrix formed as the product of the individual transfer matrices by applying continuity of the displacement and stress components at the interfaces of neighboring layers, is employed to solve for the modal scattering coefficients. Limiting cases are considered and good agreements with the solutions available in the literature are obtained.
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Authors
Majid Rajabi
MSc Student-Sharif University of Technology
Seyyed Mohammad Hasheminejad
Associate Professor-Iran University of of Science and Technology
Siavash Kazemirad
MSc Student-Sharif University of Technology
Ahmad AlandiHallaj
MSc Student-Sharif University of Technology
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