Finite element analysis of logs geometry influence to 1st natural frequency with respect of frequence-resonance method use

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F21%3A43920463" target="_blank" >RIV/62156489:43410/21:43920463 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.fdtme.ukim.edu.mk/en/conference-2021/PROCEEDINGS%20of%20the%20Conference%20-Wood%20Technology%20&%20Product%20Design-Ohrid-2021.pdf" target="_blank" >http://www.fdtme.ukim.edu.mk/en/conference-2021/PROCEEDINGS%20of%20the%20Conference%20-Wood%20Technology%20&%20Product%20Design-Ohrid-2021.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Finite element analysis of logs geometry influence to 1st natural frequency with respect of frequence-resonance method use

Popis výsledku v původním jazyce

This paper aims to present the influence of geometry simplification on the investigation of logs mechanical properties (dynamic elastic modulus) as the non-destructive testing of wood structures and materials is a common method for assessment of timber quality. The modal analyses of logs with a variation on three levels of geometry (from simplified primitive volumes to precise scanned 3D objects) were carried out in ANSYS Workbench and Mechanical APDL (Ansys(R) Academic Research Mechanical, Release 2020 R2, ANSYS, Inc.). Fundamental frequencies in bending and longitudinal mode were validated by comparison with the results of in-situ measurement. The logs were measured by stress wave propagation (SWP) and frequency-resonance method (FRM) and dynamic elastic moduli from these data were calculated. Validation was followed by series of modal analyses (computed by finite element method) where geometry precision to 1st frequency and dynamic elastic modulus was evaluated. Results were discussed with respect to provide foundations for enhancement of methods for non-destructive wood measurement.

Název v anglickém jazyce

Finite element analysis of logs geometry influence to 1st natural frequency with respect of frequence-resonance method use

Popis výsledku anglicky

This paper aims to present the influence of geometry simplification on the investigation of logs mechanical properties (dynamic elastic modulus) as the non-destructive testing of wood structures and materials is a common method for assessment of timber quality. The modal analyses of logs with a variation on three levels of geometry (from simplified primitive volumes to precise scanned 3D objects) were carried out in ANSYS Workbench and Mechanical APDL (Ansys(R) Academic Research Mechanical, Release 2020 R2, ANSYS, Inc.). Fundamental frequencies in bending and longitudinal mode were validated by comparison with the results of in-situ measurement. The logs were measured by stress wave propagation (SWP) and frequency-resonance method (FRM) and dynamic elastic moduli from these data were calculated. Validation was followed by series of modal analyses (computed by finite element method) where geometry precision to 1st frequency and dynamic elastic modulus was evaluated. Results were discussed with respect to provide foundations for enhancement of methods for non-destructive wood measurement.

Druh

D - Stať ve sborníku

CEP obor

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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

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

5th International Scientific Conference Wood Technology &amp; Product Design: Proceedings

ISBN

978-608-4723-04-2

ISSN

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e-ISSN

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Počet stran výsledku

10

Strana od-do

162-171

Název nakladatele

Ss. Cyril and Methodius University

Místo vydání

Skopje

Místo konání akce

Ohrid

Datum konání akce

14. 9. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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