Publication detail
Fracture predictions in impact three-point bending test of European beech
KUBÍK, P. ŠEBEK, F. HASSAN VAND, M. BRABEC, M. TIPPNER, J.
Czech title
Predikce lomu při testu tříbodovým ohybem buku evropského
English title
Fracture predictions in impact three-point bending test of European beech
Type
journal article in Web of Science
Language
en
Original abstract
Hardwood has become widespread in European forests. The strongest factor is climate change and damage to conifers by the bark beetle. The effort to study hardwoods grows with increasing volume of applications. Therefore, European beech wood was investigated under two impact loads in two material directions, resulting in four unique combinations supplemented by the measurement of the friction coefficient. Then, it was computationally simulated to reproduce the cracking, while the material model reflected the orthotropic behaviour in elasticity, plasticity and failure. The model was coded using the user subroutine in Abaqus to initiate and propagate the crack using the element deletion. The resulting reaction forces were in good agreement with those from the experiments. Cracking was numerically simulated in three of four cases as experimentally observed, however, upon larger deflections. Therefore, the model is applicable for further investigations.
Czech abstract
Tvrdé dřevo se stalo v evropských lesích rozšíření. Nejsilnějším faktorem je změna klimatu a poškození jehličnanů kůrovcem. Snaha studovat tvrdé dřevo roste se zvyšujícím se objemem aplikací. Proto byl dub evropský studován při dvou rázových zatíženích ve dvou materiálových směrech, vyúsťující ve čtyři unikátní kombinace doplněné o měření součinitele tření. Poté to bylo výpočtově simulováno pro reprodukci praskání, zatímco model materiálu odrážel ortotropní chování v elasticitě, plasticity a porušování. Model byl programovaný pomocí uživatelského podprogramu v Abaqusu pro iniciaci a šíření trhliny pomocí mazání prvků. Výsledné reakční síly byly v dobrém souladu s těmi z experimentů. Praskání bylo numericky simulováno ve třech případech ze čtyř, jak bylo experimentálně pozorováno, nicméně při větších průhybech. Tudíž model je aplikovatelný pro další výzkumy.
English abstract
Hardwood has become widespread in European forests. The strongest factor is climate change and damage to conifers by the bark beetle. The effort to study hardwoods grows with increasing volume of applications. Therefore, European beech wood was investigated under two impact loads in two material directions, resulting in four unique combinations supplemented by the measurement of the friction coefficient. Then, it was computationally simulated to reproduce the cracking, while the material model reflected the orthotropic behaviour in elasticity, plasticity and failure. The model was coded using the user subroutine in Abaqus to initiate and propagate the crack using the element deletion. The resulting reaction forces were in good agreement with those from the experiments. Cracking was numerically simulated in three of four cases as experimentally observed, however, upon larger deflections. Therefore, the model is applicable for further investigations.
Keywords in Czech
Anizotropie; Barlat; dynamický; explicitní; prohnutí; prasknutí
Keywords in English
Anisotropy; Barlat; Dynamic; Explicit; Flexure; Rupture
Released
31.08.2024
Publisher
Springer Nature
ISSN
1435-0211
Volume
70
Number
1
Pages from–to
1–12
Pages count
12
BIBTEX
@article{BUT189598,
author="Petr {Kubík} and František {Šebek} and Mojtaba {Hassan Vand} and Martin {Brabec} and Jan {Tippner},
title="Fracture predictions in impact three-point bending test of European beech",
year="2024",
volume="70",
number="1",
month="August",
pages="1--12",
publisher="Springer Nature",
issn="1435-0211"
}