Identification of viscoelastic material properties using the analysis of waves propagated in thin rods

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F21%3A43963240" target="_blank" >RIV/49777513:23520/21:43963240 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11025/46214" target="_blank" >http://hdl.handle.net/11025/46214</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Identification of viscoelastic material properties using the analysis of waves propagated in thin rods

Popis výsledku v původním jazyce

This work deals with the identification of material parameters of a thin prismatic viscoelastic homogeneous rods. The first part of this paper discusses transient waves in a viscoelastic 1D medium and presents the relations describing the acceleration of a rod in the space-time domain for specified boundary conditions and for different types of axial load. Subsequently, experiments performed on rods of various material properties, which verify the correctness of the derived solution, are presented in the next part. The following paragraph describes the procedure of material properties identification, which is implemented in the Matlab environment and uses a built-in optimization function and an algorithm of numerical inverse Laplace transform (NILT). Finally, the results of the optimization are analysed and discussed.

Název v anglickém jazyce

Identification of viscoelastic material properties using the analysis of waves propagated in thin rods

Popis výsledku anglicky

This work deals with the identification of material parameters of a thin prismatic viscoelastic homogeneous rods. The first part of this paper discusses transient waves in a viscoelastic 1D medium and presents the relations describing the acceleration of a rod in the space-time domain for specified boundary conditions and for different types of axial load. Subsequently, experiments performed on rods of various material properties, which verify the correctness of the derived solution, are presented in the next part. The following paragraph describes the procedure of material properties identification, which is implemented in the Matlab environment and uses a built-in optimization function and an algorithm of numerical inverse Laplace transform (NILT). Finally, the results of the optimization are analysed and discussed.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GA19-04956S" target="_blank" >GA19-04956S: Dynamika a nelineární chování pokročilých kompozitních struktur; modelování a optimalizace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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