Elasto-plastic material model of green beech wood

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F24%3A43925305" target="_blank" >RIV/62156489:43410/24:43925305 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1186/s10086-024-02140-6" target="_blank" >https://doi.org/10.1186/s10086-024-02140-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1186/s10086-024-02140-6" target="_blank" >10.1186/s10086-024-02140-6</a>

Result language

angličtina

Original language name

Elasto-plastic material model of green beech wood

Original language description

Physically modelling the mechanical response of a tree by numerical simulation depends on having accurate data on the mechanical properties of green hardwood. Lacking such data, we developed and validated an orthotropic elasto-plastic (E-P) material model, based on the results of experiments performed on European beech (Fagus sylvatica L.) green wood, capable of including both the non-linearity and orthotropic properties of the material. We selected 655 clear samples with the special orthotropic structure of annual rings. All samples were prepared immediately after felling; their moisture content (MC) was 80% on average. The mechanical responses in normal directions and shear are represented by bi-linear stress-strain curves. The E-P model was validated by comparing the force-deflection response of three-point bending of green wood samples in a finite-element method (FEM) simulation (the average relative error was 4.6% for point-wise and 1.7% for integral-wise comparison). The output of this work was a consistent set of material constants for the E-P material model that is now available for the structural analysis of beech wood with MC above to fibre saturation point (FSP), especially green wood, subjected to relatively high loads (such that a plastic deformation appears) and that can very well predict a non-linear response above the proportional limits.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20502 - Paper and wood

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2024

Confidentiality

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

Name of the periodical

Journal of Wood Science

ISSN

1435-0211

e-ISSN

1611-4663

Volume of the periodical

70

Issue of the periodical within the volume

7 June

Country of publishing house

JP - JAPAN

Number of pages

14

Pages from-to

29

UT code for WoS article

001243381700001

EID of the result in the Scopus database

2-s2.0-85195593656