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

Result code in 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>
Result on the web
<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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Result language
angličtina
Original language name
Finite element analysis of logs geometry influence to 1st natural frequency with respect of frequence-resonance method use
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/LL1909" target="_blank" >LL1909: Tree Dynamics: Understanding of Mechanical Response to Loading</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
5th International Scientific Conference Wood Technology & Product Design: Proceedings
ISBN
978-608-4723-04-2
ISSN
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e-ISSN
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Number of pages
10
Pages from-to
162-171
Publisher name
Ss. Cyril and Methodius University
Place of publication
Skopje
Event location
Ohrid
Event date
Sep 14, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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