Spectral Stochastic Infinite Element Method in Vibroacoustics

Felix Kronowetter, Lennart Moheit, Martin Eser, Kian K. Sepahvand, Steffen Marburg

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A novel method to solve exterior Helmholtz problems in the case of multipole excitation and random input data is developed. The infinite element method is applied to compute the sound pressure field in the exterior fluid domain. The consideration of random input data leads to a stochastic infinite element formulation. The generalized polynomial chaos expansion of the random data results in the spectral stochastic infinite element method. As a solution technique, the non-intrusive collocation method is chosen. The performance of the spectral stochastic infinite element method is demonstrated for a time-harmonic problem and an eigenfrequency study.

Original languageEnglish
Article number2050009
JournalJournal of Theoretical and Computational Acoustics
Volume28
Issue number2
DOIs
StatePublished - 1 Jun 2020

Keywords

  • Infinite element method
  • exterior Helmholtz problems
  • random input data

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