Acoustic analysis of anisotropic poroelastic multilayered systems
2016 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, ISSN 1089-7550, Vol. 119, no 8, 084907- p.Article in journal (Refereed) Published
The proposed method allows for an extended analysis of the wave analysis, internal powers, and acoustic performance of anisotropic poroelastic media within semi-infinite multilayered systems under arbitrary excitation. Based on a plane wave expansion, the solution is derived from a first order partial derivative as proposed by Stroh. This allows for an in-depth analysis of the mechanisms controlling the acoustic behaviour in terms of internal powers and wave properties in the media. In particular, the proposed approach is used to highlight the influence of the phenomena intrinsic to anisotropic poroelastic media, such as compression-shear coupling related to the material alignment, the frequency shift of the fundamental resonance, or the appearance of particular geometrical coincidences in multilayered systems with such materials.
Place, publisher, year, edition, pages
American Institute of Physics (AIP), 2016. Vol. 119, no 8, 084907- p.
Anisotropy, poroelastic materials, acoustic, mechanical waves, porous materials, acoustic waves
Vehicle Engineering Applied Mechanics Materials Engineering
Research subject Materials Science and Engineering; Vehicle and Maritime Engineering
IdentifiersURN: urn:nbn:se:kth:diva-183351DOI: 10.1063/1.4942443ISI: 000371601800038ScopusID: 2-s2.0-84959549758OAI: oai:DiVA.org:kth-183351DiVA: diva2:909590
QC 201603102016-03-072016-03-072016-04-01Bibliographically approved