Sound radiation from poroelastic materials
Keywords:Acoustic waves, Boundary conditions, Boundary element method, Degrees of freedom (mechanics), Elastic moduli, Elasticity, Finite element method, Integral equations, Porous materials, Pressure effects, Vectors, Viscosity, Biot's poroelasticity equations, Elastic plates, Inertial forces, Solid phase displacement
AbstractAn approach to predict the sound radiation of baffled poroelastic media including fluid loading effect is discussed. The problem has been solved using a mixed finite-element method (FEM)-boundary element method (BEM) approach. In this approach the fluid loading is accounted for using an admittance matrix and solid phase-interstitial pressure coupling terms. The method has been considered in the case of an acoustic excitation. The results show that the radiation of the porous medium into the semi infinite fluid amounts to an added admittance term onto the interface interstitial pressure degrees of freedom.
How to Cite
Copyright on articles is held by the author(s). The corresponding author has the right to grant on behalf of all authors and does grant on behalf of all authors, a worldwide exclusive licence (or non-exclusive license for government employees) to the Publishers and its licensees in perpetuity, in all forms, formats and media (whether known now or created in the future)
i) to publish, reproduce, distribute, display and store the Contribution;
ii) to translate the Contribution into other languages, create adaptations, reprints, include within collections and create summaries, extracts and/or, abstracts of the Contribution;
iii) to exploit all subsidiary rights in the Contribution,
iv) to provide the inclusion of electronic links from the Contribution to third party material where-ever it may be located;
v) to licence any third party to do any or all of the above.