Geometric Uncertainty Computation for Composite Sound Absorbing System by High-Order Perturbed X-FEM

Résumé fourni par la source

During the manufacturing and experimental phase, the geometry of composite sound-absorbing systems could be subjected unexpected variations, such as differences in thickness, surface flatness, and smoothness of layers. These geometric uncertainties can result in a markedly altered acoustic response of the entire system, which is not readily identified. To effectively manage this variability in simulations, we propose a high-order perturbed eXtended Finite Element Method, eliminating the constraints of re-meshing and repeated computation for uncertainty quantification. A series of numerical experiments are conducted, demonstrating the proposed method’s efficiency and accuracy. In addition, this work offers valuable preliminary insights for future research.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.