Modelling of a visco-hyperelastic polymeric foam with a continuous to discrete relaxation spectrum approach

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985840%3A_____%2F20%3A00525269" target="_blank" >RIV/67985840:_____/20:00525269 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21110/20:00342563
Result on the web
<a href="https://doi.org/10.1016/j.jmps.2020.104030" target="_blank" >https://doi.org/10.1016/j.jmps.2020.104030</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmps.2020.104030" target="_blank" >10.1016/j.jmps.2020.104030</a>

Result language
angličtina
Original language name
Modelling of a visco-hyperelastic polymeric foam with a continuous to discrete relaxation spectrum approach
Original language description
The prediction of compressive properties of foams at large strains and in a wide range of strain rates is still an open issue. In this work we propose a visco-hyperelastic formulation, suitable for large finite strain applications, for the prediction of the compressive response of foams that takes into account the viscoelasticity of the polymer, nonlinear damping, nonlinear behaviour of the cellular structure and effect of gas permeability through the pores at high strain rates. A mathematical expression of the continuous relaxation spectrum is proposed to model the viscoelastic behaviour of the polymer. The relaxation spectrum is then discretized with the desired accuracy required for the subsequent numerical simulations. The model parameters are identified by coupling dynamic measurements at small strain with static ones at large strain. The results are validated by comparing numerical predictions with experimental data from compressive tests up to 50% strain performed at strain rates spanning over 6 degrees of magnitude.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10101 - Pure mathematics

Project
<a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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