Determination of elastic properties of beech plywood by analytical, experimental and numerical methods

Merhar, Miran (author)

This research article examines the application of various methods to determine the effective elastic properties of beech veneer-wood composites. Using laminate theory, the theoretically calculated effective values of the in-plane and out-of-plane modulus of elasticity as well as shear modulus are compared with the values determined from the natural frequencies of flexural, torsional and longitudinal vibrations of samples having dfferent orientations and numbers of composite layers. The samples are also modelled using the finite element method, and their natural frequencies are calculated by the modal analysis. Research has shown that the laminate theory, which is well established and applied in the world of synthetic composites, can also be applied to beech plywood composites, where the theoretically calculated effective values can be up to 15% higher. Similarly, due to the higher calculated effective elastic properties, higher natural frequencies of flexural, torsional and longitudinal vibrations are also calculated by the finite element method.

• Language: English
• Keywords: composite, laminate theory, flexural vibration, torsion, modulus of elasticity, shear modulus, finite element method, modal analysis, plywood, beech
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Year: 2020
• Number of pages: 21 str.
• Numbering: Vol. 11, iss. 11, art. 1221
• PID: 20.500.12556/RUL-134686
• UDC: 630*8
• ISSN on article: 1999-4907
• DOI: 10.3390/f11111221
• COBISS.SI-ID: 38797059
• Publication date in RUL: 26.01.2022

Record is a part of a journal

• Title: Forests
• Shortened title: Forests
• Publisher: MDPI
• ISSN: 1999-4907
• COBISS.SI-ID: 3872166

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 20.11.2020

Secondary language

• Language: Slovenian
• Keywords: kompoziti, laminatna teorija, upogibno nihanje, torzija, modul elastičnosti, strižni modul, metoda končnih elementov, modalna analiza, vezan les, bukev

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0182
• Name: Razvojna vrednotenja