Numerical modelling of guided waves dispersion curves in an aluminium flat plate by finite element analysis

This work presents a practical approach to obtain the dispersion curves for a plate via numerical modelling using the commercial software ANSYS. The method is based on the dynamic analysis of the waveguide to extract the mode shapes (eigenvectors) for each resonant frequency (eigenvalue) from the na...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 1386; no. 1; pp. 12117 - 12122
Main Authors Galvis, L, Quiroga, J, González-Estrada, O A
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2019
IOP Science
Subjects
Algorithms
Aluminum
Damping
Dispersion curve analysis
Eigenvalues
Eigenvectors
Engineering Sciences
Finite element method
Flat plates
Frequency response
Mathematical models
Mechanics
Modal assurance criterion
Physics
Resonant frequencies
Software
Structural mechanics
Waveguides
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Summary:This work presents a practical approach to obtain the dispersion curves for a plate via numerical modelling using the commercial software ANSYS. The method is based on the dynamic analysis of the waveguide to extract the mode shapes (eigenvectors) for each resonant frequency (eigenvalue) from the natural frequency response without damping. Each eigenvalue provides a frequency and the dimensions of the model (wavelength), which are the basis of the dispersion curves. Then, an algorithm is developed in MATLAB to stack the different mode solutions with its respective frequencies using the modal assurance criterion. The data obtained is compared with the dispersion curves provided by the GUIGW software.
ISSN:1742-6588
1742-6596
1742-6596
1742-6588
DOI:10.1088/1742-6596/1386/1/012117