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Approximate description of the dynamics of thin isotropic elastic coatings and interlayers by using asymptotics of high order of accuracy
Zakharov, D.D. (Avtor), Nikonov, Anatolij (Avtor)

URLURL - Predstavitvena datoteka, za dostop obiščite http://dx.doi.org/10.1007/s11029-006-0006-7 Povezava se odpre v novem oknu

Izvleček
Asymptotically accurate low-frequency models for isotropic elastic coatings and interlayers are developed. The main constraint is the requirement on contact conditions for the layer and the base that at least one of the boundary conditions must include the displacement component in an explicit form. The displacement and stress fields in the three-dimensional elastic system are sought in the form of asymptotic expansion into power series of a small parameter - the ratio between the half-thickness of the layer and the minimum length of the wave in the longitudinal direction. The action of the layer is approximated by impedance boundary conditions, which are transferred to the contact surface with the basic, more thick body. These conditions are obtained with an asymptotic error up to and including the sixth order of magnitude. A numerical testing, which is carried out with the example of partial waves, shows a satisfactory accuracy, comparable with that of high-order theories of plates. The results obtained can be utilized in fast algorithms for calculating spectra of natural waves in half-spaces, thick laminated plates, and shallow shells with coatings and interlayers. The physical limit of applicability of the theory developed is the frequency of the first quasi-resonance in the corresponding deformable system. The number of alternating interlayers is unlimited.

Jezik:Angleški jezik
Ključne besede:prevleke, robni pogoji, dinamika, napetosti-deformacije, numerično preskušanje, coatings, interlayers, dynamics, impedance boundary conditions
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2005
Št. strani:str. 527-534
Številčenje:Letn. 41, št. 6
UDK:531/533
ISSN pri članku:0191-5665
COBISS.SI-ID:9506843 Povezava se odpre v novem oknu
Število ogledov:833
Število prenosov:246
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Naslov:Mechanics of composite materials
Skrajšan naslov:Mech. compos. mater.
Založnik:Consultants Bureau.
ISSN:0191-5665
COBISS.SI-ID:512119833 Povezava se odpre v novem oknu

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