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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68407700:21110/20:00342563

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10101 - Pure mathematics

Projekt

<a href="/cs/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Centrum pokročilých aplikovaných přírodních věd</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of the Mechanics and Physics of Solids

ISSN

0022-5096

e-ISSN

—

Svazek periodika

142

Číslo periodika v rámci svazku

September

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

28

Strana od-do

104030

Kód UT WoS článku

000546329900012

EID výsledku v databázi Scopus

2-s2.0-85086013317