Finite-element modelling of acoustic wave scattering from fluid, rigid and elastic objects

Authors

  • Omar Falou Dept. of Electrical and Computer Engineering, Ryerson University, 350 Victoria St., Ont. M5B 2K3, Canada
  • J. Carl Kumaradas Dept. of Electrical and Computer Engineering, Ryerson University, 350 Victoria St., Ont. M5B 2K3, Canada
  • Michael C. Kolios Dept. of Electrical and Computer Engineering, Ryerson University, 350 Victoria St., Ont. M5B 2K3, Canada

Keywords:

Acoustic wave propagation, Computation theory, Computer software, Elasticity, Finite element method, Natural frequencies, Rigidity, 3-D arbitrary-shaped structures, Acoustic scattering models, Elastic spheres, Finite-element modeling

Abstract

A finite element model (FEM) of acoustic wave propagation through 3-D arbitrary-shaped structures is developed to solve the problem of high frequency acoustic scattering. The FEMLAB&reg software package was used to develop and solve acoustic scattering models from fluid, rigid, and elastic spheres immersed in a fluid medium, for which analytical solutions are available. The entire computation domain is modeled as a sphere filled with fluid domains. It is found that the FEM provided accurate predictions of wave scattering by three types of scatterers, fluid, rigid immovable, and elastic.

Downloads

Published

2005-09-01

How to Cite

1.
Falou O, Kumaradas JC, Kolios MC. Finite-element modelling of acoustic wave scattering from fluid, rigid and elastic objects. Canadian Acoustics [Internet]. 2005 Sep. 1 [cited 2021 Dec. 8];33(3):84-5. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1756

Issue

Section

Proceedings of the Acoustics Week in Canada