Transient response of non-prismatic heterogeneous viscoelastic rods and identification of their material properties
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F24%3A43971807" target="_blank" >RIV/49777513:23520/24:43971807 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0997753824000214" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0997753824000214</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.euromechsol.2024.105241" target="_blank" >10.1016/j.euromechsol.2024.105241</a>
Alternative languages
Result language
angličtina
Original language name
Transient response of non-prismatic heterogeneous viscoelastic rods and identification of their material properties
Original language description
Pulse propagation in homogeneous and heterogeneous viscoelastic thin rods of a constant or variable cross-section is investigated in this work using analytical, numerical and experimental methods. Based on the elementary theory of thin rods, the model for pulse propagation in a layered non-prismatic rod is derived and solved in the Laplace domain. Using the numerical inverse Laplace transform, semi-analytical transient solutions for both homogeneous, layered and functionally graded viscoelastic prismatic or non-prismatic rods are obtained. The parameters of the generalised Zener model (GZM) are then identified by solving the problem of parametric optimisation in Matlab and utilising the transient acceleration responses measured for rods of different types and different material properties (POM-C, PC1000, PP, PVC, PET, PLA and aluminium). A great agreement between the measured signals and the responses calculated for GZM with different numbers of relaxation times was achieved. Next, the dynamic properties of selected prismatic and non-prismatic rods have been studied. The dispersion and attenuation curves for both homogeneous and layered rods are reconstructed from the measured signal using a method adopted from the literature. The obtained results are then discussed in the context of the theoretical curves resulted from the elementary rod theory and from the theory that takes into account the lateral motions of the rod.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
<a href="/en/project/GF22-00863K" target="_blank" >GF22-00863K: Controllable metamaterials and smart structures: Nonlinear problems, modelling and experiments</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
ISSN
0997-7538
e-ISSN
1873-7285
Volume of the periodical
105
Issue of the periodical within the volume
MAY-JUN 2024
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
17
Pages from-to
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UT code for WoS article
001172272600001
EID of the result in the Scopus database
2-s2.0-85183455917