Modeling ultrasonic waves in elastic waveguides of arbitrary cross-section embedded in infinite solid medium
- An approach is presented to model elastic waveguides of arbitrary cross-section coupled to infinite solid media. The formulation is based on the scaled boundary-finite element method. The surrounding medium is approximately accounted for by a dashpot boundary condition derived from the acoustic impedances of the infinite medium. It is discussed under which circumstances this approximation leads to sufficiently accurate results. Computational costs are very low, since the surrounding medium does not require discretization and the number of degrees of freedom on the cross-section is significantly reduced by utilizing higher-order spectral elements.
Autor*innen: | Hauke Gravenkamp, C. Birk, J. Van |
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Dokumenttyp: | Zeitschriftenartikel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Computers & structures |
Jahr der Erstveröffentlichung: | 2015 |
Verlag: | Pergamon Press |
Verlagsort: | Oxford |
Jahrgang/Band: | 149 |
Erste Seite: | 61 |
Letzte Seite: | 71 |
Freie Schlagwörter: | Guided waves; Leaky waves; Scaled boundary finite element method; Ultrasound |
DOI: | 10.1016/j.compstruc.2014.11.007 |
ISSN: | 0045-7949 |
ISSN: | 0366-7138 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 20.02.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 08.01.2015 |