Numerical analysis of mechanical behavior of softwood: bilinear elasto-plastic orthotropic model

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F18%3A43914500" target="_blank" >RIV/62156489:43410/18:43914500 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378297:_____/18:00492789

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Numerical analysis of mechanical behavior of softwood: bilinear elasto-plastic orthotropic model

Popis výsledku v původním jazyce

Finite element method (FEM) is one of the most effective approaches for the virtual assessment and prediction of behavior in timber structures. Norway spruce is considered as desired model wood because of its frequent use. The complex modeling of behavior includes assumptions of orthotropicity and non-linear stress-strain response. The aim of the study was to determine the elasto-plastic material characteristics of compression tests parallel and perpendicular to the grain and three-point bending in compliance with the relevant test standards. Elasto-plastic material model was the basis for the finite-element (FE) analyses with the input of experimental data. The elasto-plastic material model with non-linear isotropic hardening was applied based on the Hill yield criterion in regions of uniaxial compression. The material characteristics were optimized and validated by means of general FE models under the same conditions as applied for the experiments. A good agreement was found between numerically predicted and experimentally measured data. The proposed elasto-plastic material models are capable for predicting of the ultimate strength, and therefore could contribute to a more reliable design of wood structures and their performance.

Název v anglickém jazyce

Numerical analysis of mechanical behavior of softwood: bilinear elasto-plastic orthotropic model

Popis výsledku anglicky

Finite element method (FEM) is one of the most effective approaches for the virtual assessment and prediction of behavior in timber structures. Norway spruce is considered as desired model wood because of its frequent use. The complex modeling of behavior includes assumptions of orthotropicity and non-linear stress-strain response. The aim of the study was to determine the elasto-plastic material characteristics of compression tests parallel and perpendicular to the grain and three-point bending in compliance with the relevant test standards. Elasto-plastic material model was the basis for the finite-element (FE) analyses with the input of experimental data. The elasto-plastic material model with non-linear isotropic hardening was applied based on the Hill yield criterion in regions of uniaxial compression. The material characteristics were optimized and validated by means of general FE models under the same conditions as applied for the experiments. A good agreement was found between numerically predicted and experimentally measured data. The proposed elasto-plastic material models are capable for predicting of the ultimate strength, and therefore could contribute to a more reliable design of wood structures and their performance.

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

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

World Conference on Timber Engineering: Proceedings

ISBN

979-11-6019-235-3

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

"Nestrankovano"

Název nakladatele

National Institute of Forest Science

Místo vydání

Soul

Místo konání akce

Soul

Datum konání akce

20. 8. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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