Validation of Numerical Model of Tree Dynamic Response by Optical Measurements

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F22%3A43922519" target="_blank" >RIV/62156489:43410/22:43922519 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Validation of Numerical Model of Tree Dynamic Response by Optical Measurements

Popis výsledku v původním jazyce

The current research is dedicated to the topic of tree dynamics as its natural response to wind loading. The dynamic response can be described by the shape and frequency of oscillations defined by the geometry and material properties (global stiffness). These parameters are often derived from displacements (inclinations, accelerations) measured by locally coupled devices. While the complex response of the stem can help to define the overall oscillation tree shape and find the weak points of failure. The movement of twelve trees was captured by optical technique during &quot;pull and release&quot; tests and displacements (2D, 3D) along the stem in the time domain were reconstructed. The experimental work was accompanied by a series of computations with the parametric finite-element model of the tree. The validated numerical model provides a testing group for what-if scenarios which enables observation of the effect of the internal defect on the dynamic response of trees.

Název v anglickém jazyce

Validation of Numerical Model of Tree Dynamic Response by Optical Measurements

Popis výsledku anglicky

The current research is dedicated to the topic of tree dynamics as its natural response to wind loading. The dynamic response can be described by the shape and frequency of oscillations defined by the geometry and material properties (global stiffness). These parameters are often derived from displacements (inclinations, accelerations) measured by locally coupled devices. While the complex response of the stem can help to define the overall oscillation tree shape and find the weak points of failure. The movement of twelve trees was captured by optical technique during &quot;pull and release&quot; tests and displacements (2D, 3D) along the stem in the time domain were reconstructed. The experimental work was accompanied by a series of computations with the parametric finite-element model of the tree. The validated numerical model provides a testing group for what-if scenarios which enables observation of the effect of the internal defect on the dynamic response of trees.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

40102 - Forestry

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