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Modelling the flexural vibration of a sandwich beam using modified timoshenko theory
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet.
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg, MWL Marcus Wallenberg Laboratoriet.
2005 (engelsk)Inngår i: 12th International Congress on Sound and Vibration 2005: ICSV 2005, 2005, s. 4944-4951Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The flexural vibration of an asymmetric sandwich beam is modelled using Timoshenko theory with frequency dependent parameters. The advantage of this approach, as compared to using modified Bernoulli-Euler theory, is the independence of the frequency dependent parameters on the boundary conditions of the beam. Using Bernoulli-Euler theory, the apparent bending stiffness would have to depend on the particular end conditions of the beam configuration in order to achieve the best possible accuracy. Using instead Timoshenko theory, with frequency dependent bending stiffness and shear modulus parameters, this problem is avoided. The results are compared to measurements and to the results obtained from a previously derived 6th order sandwich beam theory, which takes into account the effects of pure bending of the entire beam, core shear and its coupling to the bending of the laminates, and rotational inertia. The possibility of implementing the approach in existing Timoshenko beam elements in commercial FEM programs is discussed.

sted, utgiver, år, opplag, sider
2005. s. 4944-4951
Serie
International Congress on Sound and Vibration, ICSV ; Vol. 6
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-148522Scopus ID: 2-s2.0-84881581889ISBN: 978-162748149-6 (tryckt)OAI: oai:DiVA.org:kth-148522DiVA, id: diva2:739596
Konferanse
12th International Congress on Sound and Vibration 2005, ICSV 2005; Lisbon, Portugal, 11-14 July, 2005
Merknad

QC 20140821

Tilgjengelig fra: 2014-08-21 Laget: 2014-08-08 Sist oppdatert: 2014-08-21bibliografisk kontrollert

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Totalt: 195 treff
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