Wave analysis of intrinsic phenomena related to anisotropic poroelastic materials in multilayered systems
2016 (English)Conference paper (Refereed)
An analysis of intrinsic dynamic phenomena in anisotropic poroelastic media is presented, based on a plane wave formulation. The latter is derived from the Stroh formalism on the state variables governing the beha- viour of such media. A particular interest is given to the compression-shear coupling related to the material alignment of the anisotropic poroelastic core. This coupling motion can be directly correlated to the ma- terial mechanical parameters and affects the response of the overall structure in specific frequency ranges. Furthermore, the effect of the anisotropic poroelastic material coordinate orientation on the the acoustic and elastical response of multilayered systems with such material cores is investigated under diffuse field excita- tion conditions (i.e. only a part the mechanics which doesnt include maximum stress at rupture). An insight into other effects of anisotropy is provided, such as the frequency shift of the fundamental resonance related to the core material alignment and the appearance of particular geometrical coincidences in the acoustic behaviour of the system.
Place, publisher, year, edition, pages
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-192661OAI: oai:DiVA.org:kth-192661DiVA: diva2:971685
ISMA 2016 International Conference in Noise and Vibration Engineering and USD 2016 International Conference on Uncertainty in Structural Dynamics, Leuven, Belgium
QC 201609232016-09-192016-09-192016-09-23Bibliographically approved