000013103 001__ 13103
000013103 005__ 20161114160327.0
000013103 04107 $$aeng
000013103 046__ $$k2009-06-22
000013103 100__ $$aSoe-Knudsen, A.
000013103 24500 $$aModeling of spatial fluid filled pipe systems containing both straight and curved segments using boundary integral equations

000013103 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013103 260__ $$bNational Technical University of Athens, 2009
000013103 506__ $$arestricted
000013103 520__ $$2eng$$aA methodology is described for modeling arbitrarily shaped 3D pipe systems consisting of uniform slender straight and curved elements. Dispersion diagrams for curved fluid filled pipes in the low frequency domain are generated and the roles of fluid density, pressure and flow speed are illustrated. For validation, eigen frequencies for a compound system are compared with FEM solutions in ANSYS. Energy flux analysis is exemplified for a system containing four repeated substructures. Results from this energy flux mapping are compared with stop-band predictions of the standard Floquet theory.

000013103 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013103 653__ $$aVibration, Wave Propagation, Periodic Structure, Fluid filled Pipes, Somigliana’s identities, Boundary Integral Equation Method. Abstract. A methodology is described for modeling arbitrarily shaped 3D pipe systems consisting of uniform slender straight and curved elements. Dispersion diagrams for curved fluid filled pipes in the low frequency domain are generated and the roles of fluid density, pressure and flow speed are illustrated. For validation, eigen frequencies for a compound system are compared with FEM solutions in ANSYS. Energy flux analysis is exemplified for a system containing four repeated substructures. Results from this energy flux mapping are compared with stop-band predictions of the standard Floquet theory.

000013103 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013103 720__ $$aSoe-Knudsen, A.
000013103 8560_ $$ffischerc@itam.cas.cz
000013103 8564_ $$s471733$$uhttps://invenio.itam.cas.cz/record/13103/files/CD138.pdf$$yOriginal version of the author's contribution as presented on CD, section: Acoustic and structural wave transmission in pipelines (MS).
000013103 962__ $$r13074
000013103 980__ $$aPAPER