Contribution
Isogeometric analysis of acoustic-structural coupled systems
* Presenting author
Abstract:
In the present work, an isogeometric approach is proposed to address the acoustic-structural coupled system, which is essential for noise control analysis of thin shell structures. The acoustic model is based on the time-harmonic Helmholtz equation for wave propagation problems and analyzed by isogeometric boundary element analysis, while the structural model is analysed by an isogeometric Reissner-Mindlin shell formulation following the finite element basis. Since the meshes of the two coupled models do not match, interface conditions are introduced at the fluid boundary. The isogeometric analysis is proposed for both models as it has the ability to model real geometries by adopting moderate degrees of freedom. This will enable us to further analyse large-scale problems or irregular complex geometries such as vibroacoustic metamaterials.