Elastic-plastic material characteristics at different moisture content level

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F19%3A43916501" target="_blank" >RIV/62156489:43410/19:43916501 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378297:_____/19:00509038

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Elastic-plastic material characteristics at different moisture content level

Popis výsledku v původním jazyce

The mechanical properties of wood are strongly dependent on moisture content (MC), which affects the mechanical performance of wooden structures or single timber elements subjected to environment changes. This should be taken into account when choosing a material for individual applications. Current assessment options offers more than experimental testing; sophisticated modelling tools such as finite element analysis (FEA) can accurately predict the moistureaffected mechanical behaviour of wooden structures. For this purpose FEA requires the specific material characteristics of wood at different MC levels. The goal of this work is to model the elastic-plastic mechanical behaviour of Oak wood (Quercus L.) at different MC levels. In order to achieve this goal, these partial steps were fulfilled: (a) performing of in-house standard tests (compression, tension, shear and three-point bending) at 20oC and 65% and 100% of relative humidity (RH) environment, (b) collecting of all needed material characteristics and populating of material models for FEA, (c) validation of the material models by confronting of predicted mechanical behaviour with experimental one on a simple wooden object, and (d) calibration of material models by iterative changing of individual material characteristics until the prediction was consistent with a reference.

Název v anglickém jazyce

Elastic-plastic material characteristics at different moisture content level

Popis výsledku anglicky

The mechanical properties of wood are strongly dependent on moisture content (MC), which affects the mechanical performance of wooden structures or single timber elements subjected to environment changes. This should be taken into account when choosing a material for individual applications. Current assessment options offers more than experimental testing; sophisticated modelling tools such as finite element analysis (FEA) can accurately predict the moistureaffected mechanical behaviour of wooden structures. For this purpose FEA requires the specific material characteristics of wood at different MC levels. The goal of this work is to model the elastic-plastic mechanical behaviour of Oak wood (Quercus L.) at different MC levels. In order to achieve this goal, these partial steps were fulfilled: (a) performing of in-house standard tests (compression, tension, shear and three-point bending) at 20oC and 65% and 100% of relative humidity (RH) environment, (b) collecting of all needed material characteristics and populating of material models for FEA, (c) validation of the material models by confronting of predicted mechanical behaviour with experimental one on a simple wooden object, and (d) calibration of material models by iterative changing of individual material characteristics until the prediction was consistent with a reference.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/DG16P02M026" target="_blank" >DG16P02M026: Historické dřevěné konstrukce: typologie, diagnostika a tradiční opracování dřeva</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

5th International Conference on Structural Health Assessment of Timber Structure, SHATiS’19: Proceedings

ISBN

978-989-54496-2-0

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

609-618

Název nakladatele

Universidade do Minho

Místo vydání

Braga

Místo konání akce

Guimarães

Datum konání akce

25. 9. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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