Elke Deckers

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This paper discusses the sound transmission loss of a locally resonant metamaterial, by application of the hybrid Wave Based — Finite Element unit cell method. Since damping has an important influence on the vibro-acoustic attenuation performance of these metamaterials, the impact of damping in resonator and host structure on the sound transmission(More)
Poroelastic materials are often used as sound and vibration reduction measures in many engineering applications. Their dynamic behaviour is accurately described by the theory of Biot. The Finite Element Method is most commonly used to simulate such materials, however, is only applicable for low-frequency applications due to the associated computational(More)
This paper presents an extension to the Wave Based Method to predict the absorption, reflection and transmission coefficients of a porous material with an embedded periodic set of inclusions. The porous unit cell is described using the Multi-Level methodology and by embedding Bloch-Floquet periodicity conditions in the weighted residual scheme. The dynamic(More)
The acoustic response of a rigidly backed poroelastic layer with a periodic set of elastic cylindrical inclusions embedded is studied. A semi-analytical approach is presented, based on Biot's 1956 theory to account for the deformation of the skeleton, coupling mode matching technique, Bloch wave representation, and multiple scattering theory. This model is(More)
Recently, a wave based method was developed to efficiently model the harmonic behavior of poroelastic materials. This novel method relaxes the frequency limitations of the finite element method by using exact solutions of the governing equations to approximate the field variables. However, in the case that the stress fields exhibit a singularity, the Wave(More)
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