Nitsche-XFEM for pressure jump interface condition in vibro-acoustic problems in presence of porous materials - 15ème colloque national en calcul des structures
Communication Dans Un Congrès Année : 2022

Nitsche-XFEM for pressure jump interface condition in vibro-acoustic problems in presence of porous materials

Résumé

We present a variational formulation based on the idea of Nitsche's method to account for thin layers in acoustic problems. Pressure jump model of robin-type condition is used to model the effects of thin acoustic layers. The computational domain is discretized using eXtended Finite Element Method (X-FEM) to represent the discontinuity in the elements and to mitigate the meshing restriction for complex geometry of interfaces. The porous materials with complex-valued propertis are also considered in current work, which introduce an energy dissipation in the system.
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Dates et versions

hal-03718306 , version 1 (08-07-2022)

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  • HAL Id : hal-03718306 , version 1

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Shaoqi Wu, Grégory Legrain, Olivier Dazel. Nitsche-XFEM for pressure jump interface condition in vibro-acoustic problems in presence of porous materials. 15e colloque national en calcul des structures, Université Polytechnique Hauts-de-France [UPHF], May 2022, Hyères-les-Palmiers, France. ⟨hal-03718306⟩
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