From Static to Dynamic Mechanical Model of Green Wood

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F22%3A43921905" target="_blank" >RIV/62156489:43410/22:43921905 - isvavai.cz</a>

Výsledek na webu

<a href="https://mcusercontent.com/3065bd90decc7c2777a471ff1/files/714fb757-2cd2-b75c-f5fd-851897f0308c/65th_Proceedings_FINAL_reduced.pdf" target="_blank" >https://mcusercontent.com/3065bd90decc7c2777a471ff1/files/714fb757-2cd2-b75c-f5fd-851897f0308c/65th_Proceedings_FINAL_reduced.pdf</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

From Static to Dynamic Mechanical Model of Green Wood

Popis výsledku v původním jazyce

Finite-element simulations are power-full tool for description of tree response to dynamic loading, provide insight to problem and allows sensitivity analyzes. The appropriate numerical model is given by the proper definition of input geometry, boundary conditions and material. Relevant material model of wood respect mainly tree species, gree-state, orthotropicity, elasticicty, plasticity and static to dynamic nature of loading. Unlike geometry the definition of material model of wood requires a set of parameters which is not possible to obtain by direct in-situ measurement. The set of laboratory experimental sub-tasks for the description of material static parameters of green wood of important representatives (Fagus silvatica) took place. The bi-linear material model validated by the small-specimen standard static tests was created and verified in implicit finite-element solver. The static material model parameters were consequently applied in the starting position of developing of dynamic response model in explicit finite-element solver. The dynamic material model was experimentally validated by sets of small-specimen bending impact tests with use of high-speed camera data based image analysis. The developed material model was applied in real-scale 3D laser-scan based numerical models and validated by bending tests in static testing machine as well as by frequency- resonance dynamic methods. The correspondence of mechanical response of developed material model to the experimental data allows applications of real-scale finite-element modeling in tree response assessment.

Název v anglickém jazyce

From Static to Dynamic Mechanical Model of Green Wood

Popis výsledku anglicky

Finite-element simulations are power-full tool for description of tree response to dynamic loading, provide insight to problem and allows sensitivity analyzes. The appropriate numerical model is given by the proper definition of input geometry, boundary conditions and material. Relevant material model of wood respect mainly tree species, gree-state, orthotropicity, elasticicty, plasticity and static to dynamic nature of loading. Unlike geometry the definition of material model of wood requires a set of parameters which is not possible to obtain by direct in-situ measurement. The set of laboratory experimental sub-tasks for the description of material static parameters of green wood of important representatives (Fagus silvatica) took place. The bi-linear material model validated by the small-specimen standard static tests was created and verified in implicit finite-element solver. The static material model parameters were consequently applied in the starting position of developing of dynamic response model in explicit finite-element solver. The dynamic material model was experimentally validated by sets of small-specimen bending impact tests with use of high-speed camera data based image analysis. The developed material model was applied in real-scale 3D laser-scan based numerical models and validated by bending tests in static testing machine as well as by frequency- resonance dynamic methods. The correspondence of mechanical response of developed material model to the experimental data allows applications of real-scale finite-element modeling in tree response assessment.

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20502 - Paper and wood

Projekt

<a href="/cs/project/LL1909" target="_blank" >LL1909: Dynamika stromu: popis mechanické odezvy na zatížení</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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