000021780 001__ 21780
000021780 005__ 20170622131304.0
000021780 04107 $$aeng
000021780 046__ $$k2017-06-15
000021780 100__ $$aManconi, Elisabetta
000021780 24500 $$aWAVE PROPAGATION IN PIPES WITH HELICAL PATTERN

000021780 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021780 260__ $$bNational Technical University of Athens, 2017
000021780 506__ $$arestricted
000021780 520__ $$2eng$$aPipe installations are widely used in many industrial applications, particularly in oil, water, natural gas distribution and chemical industry. Although there are many different constructions according to the specific application, these pipes often consists of synthetic rubber which covers reinforced wires wound along helical lines around an inner synthetic rubber tube. Theoretical understanding of wave propagation in these pipes, and in particular dispersion curves and wave–modes, provides information about the dynamic behaviour and stress state of the structure, and it is essential in many applications such as transmission of structure–borne sound, statistical energy analysis, shock response, non-destructive-testing and structural-health-monitoring. In this paper wave characteristics in pipes with helical patterns are studied. In particular wave propagation in cylindrical structural with helical orthotropic characteristics are investigated and some interesting characteristics of wave propagating in these structure are showed and discussed. Two different approaches, the Wave Finite Element method and an analytical model of a thin helically orthotropic cylindrical shell, are used and results are compared. Both methods are very efficient in terms of computational cost, theoretical understanding of the wave characteristics and utilisation of the model for optimisation procedures, where the model is reconfigured for each new set of parameters.

000021780 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021780 653__ $$apipes, wave propagation, helical structures, dispersion curves.

000021780 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021780 720__ $$aManconi, Elisabetta$$iGarziera, Rinaldo$$iSorokin, Sergey
000021780 8560_ $$ffischerc@itam.cas.cz
000021780 8564_ $$s183537$$uhttps://invenio.itam.cas.cz/record/21780/files/17910.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS05] Periodicity-induced effects and methods in structural dynamics
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000021780 962__ $$r21500
000021780 980__ $$aPAPER