Determination of Lamb wave dispersion curves by means of Fourier transform

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F12%3A00383607" target="_blank" >RIV/61388998:_____/12:00383607 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Determination of Lamb wave dispersion curves by means of Fourier transform

Original language description

This work reports on methods for determination of Lamb wave dispersion curves by means of Fourier transform (FT). Propagating Lamb waves are sinusoidal in both the frequency domain and the spatial domain. Therefore, the temporal FT may be carried out togo from the time to the frequency domain, and then the spatial FT may be carried out to go to the frequency?wave-number domain, where the amplitudes and the wave-numbers of individual modes may be measured. The result of this transform will be a 2D arrayof amplitudes at discrete frequencies and wave-numbers. Other method of determination of dispersion curves is based on the solution of FEM task in frequency domain. The frequency spectrum of a time?dependent excitation is defined using FT. Since a smallnumber of frequencies are sufficient to achieve a correct representation of a wide variety of temporal excitations, this approach considerably speeds up the computation by avoiding the temporal FT and by decreasing the number of calculat

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BI - Acoustics and oscillation

OECD FORD branch

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Project

<a href="/en/project/GA101%2F09%2F1630" target="_blank" >GA101/09/1630: Numerical solution to steady-state and transient wave dispersion in mechanical systems on different scales</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Applied and Computational Mechanics

ISSN

1802-680X

e-ISSN

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Volume of the periodical

6

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

12

Pages from-to

5-16

UT code for WoS article

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EID of the result in the Scopus database

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