Numerical computation of stress relaxation of isotropic magnetorheological elastomer using fractional viscoelastic models

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F21%3A00009024" target="_blank" >RIV/46747885:24210/21:00009024 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.kme.zcu.cz/compmech/info_sborniky.php" target="_blank" >https://www.kme.zcu.cz/compmech/info_sborniky.php</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Numerical computation of stress relaxation of isotropic magnetorheological elastomer using fractional viscoelastic models

Popis výsledku v původním jazyce

The paper presents numerical research on stress relaxation of isotropic magnetorheological elastomer (MRE) using fractional derivative viscoelastic models. The isotropic MRE has been fabricated by filling micro-sized carbonyl iron particles into silicone rubber. Effects of applied constant strain and magnetic field on short-term stress relaxation of isotropic MRE were carefully investigated by single- and multi-step relaxation shear tests using double-lap shear specimens. Three fractional viscoelastic models, namely, fractional Maxwell, fractional Kelvin–Voigt, and fractional Zener models were used to describe the stress relaxation response of isotropic MRE. Results showed that the fractional Kelvin-Voigt and Zener models were fitted well to the experimental data of isotropic MRE in both single- and multi-step stress relaxations. The calculated stress with long-term predictions for the isotropic MRE is in very good agreement with the measured one. Therefore, fractional Kelvin-Voigt and Zener models are applicable to predict the long-term stress relaxation of isotropic MRE.

Název v anglickém jazyce

Numerical computation of stress relaxation of isotropic magnetorheological elastomer using fractional viscoelastic models

Popis výsledku anglicky

The paper presents numerical research on stress relaxation of isotropic magnetorheological elastomer (MRE) using fractional derivative viscoelastic models. The isotropic MRE has been fabricated by filling micro-sized carbonyl iron particles into silicone rubber. Effects of applied constant strain and magnetic field on short-term stress relaxation of isotropic MRE were carefully investigated by single- and multi-step relaxation shear tests using double-lap shear specimens. Three fractional viscoelastic models, namely, fractional Maxwell, fractional Kelvin–Voigt, and fractional Zener models were used to describe the stress relaxation response of isotropic MRE. Results showed that the fractional Kelvin-Voigt and Zener models were fitted well to the experimental data of isotropic MRE in both single- and multi-step stress relaxations. The calculated stress with long-term predictions for the isotropic MRE is in very good agreement with the measured one. Therefore, fractional Kelvin-Voigt and Zener models are applicable to predict the long-term stress relaxation of isotropic MRE.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/EF16_019%2F0000843" target="_blank" >EF16_019/0000843: Hybridní materiály pro hierarchické struktury</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