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Modelling the vibration of sandwich beams using frequency dependent parameters
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg.
KTH, Skolan för teknikvetenskap (SCI), Farkost och flyg.
2007 (engelsk)Inngår i: Journal of Sound and Vibration, ISSN 0022-460X, E-ISSN 1095-8568, Vol. 300, nr 3-5, s. 589-611Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Various types of sandwich beams with foam or honeycomb cores are currently used in the industry, indicating the need for simple methods describing the dynamics of these complex structures. By implementing frequency-dependent parameters, the vibration of sandwich composite beams can be approximated using simple fourth-order beam theory. A higher-order sandwich beam model is utilized in order to obtain estimates of the frequency-dependent bending stiffness and shear modulus of the equivalent Bernoulli-Euler and Timoshenko models. The resulting predicted eigenfrequencies and transfer accellerance functions are compared to the data obtained from the higher-order model and from measurements.

sted, utgiver, år, opplag, sider
2007. Vol. 300, nr 3-5, s. 589-611
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-5942DOI: 10.1016/j.jsv.2006.07.048ISI: 000243561200010Scopus ID: 2-s2.0-33846007399OAI: oai:DiVA.org:kth-5942DiVA, id: diva2:10482
Merknad
QC 20100630Tilgjengelig fra: 2006-06-02 Laget: 2006-06-02 Sist oppdatert: 2017-12-14bibliografisk kontrollert
Inngår i avhandling
1. Vibration of sandwich beams
Åpne denne publikasjonen i ny fane eller vindu >>Vibration of sandwich beams
2006 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Some aspects and properties of the lateral vibration of sandwich beams are investigated, including the concept of apparent bending stiffness and shear modulus, allowing the sandwich beam dynamics to be approximately described by classical beam theory. A sixth order beam model is derived including boundary conditions, and the free and forced response of some beam configurations analyzed. The possibility of computing material parameters from measured eigenfrequencies, i. e. inverse analysis, is considered. The higher order model is also utilized for investigation of the energy propagation through sandwich composite beams and the transmission over different junctions.

sted, utgiver, år, opplag, sider
Stockholm: KTH, 2006
Serie
Trita-AVE, ISSN 1651-7660
HSV kategori
Identifikatorer
urn:nbn:se:kth:diva-4030 (URN)91-7178-395-4 (ISBN)
Disputas
2006-06-15, E2, Lindstedtsvägen 3, KTH, Stockholm, 14:00
Opponent
Veileder
Merknad
QC 20100630Tilgjengelig fra: 2006-06-02 Laget: 2006-06-02 Sist oppdatert: 2010-06-30bibliografisk kontrollert

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Backström, DanielNilsson, Anders Christian
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