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Artykuł

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Tytuł

Free Vibrations of Sustainable Laminated Veneer Lumber Slabs

Autorzy

[ 1 ] Instytut Budownictwa, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ P ] pracownik

Dyscyplina naukowa (Ustawa 2.0)

[2.7] Inżynieria lądowa, geodezja i transport

Rok publikacji

2024

Opublikowano w

Sustainability

Rocznik: 2024 | Tom: vol. 16 | Numer: iss. 1

Typ artykułu

artykuł naukowy

Język publikacji

angielski

Słowa kluczowe
EN
  • vibrations
  • sustainable laminated veneer lumber slabs
  • modal parameters
  • natural frequency
Streszczenie

EN In this paper, the results of dynamic laboratory tests of four laminated veneer lumber (LVL) slabs of different thicknesses, widths, and types were presented. In three of the tested slabs, LVL with all veneers glued lengthwise was used (LVL R). In one LVL slab, a fifth of the veneers were glued crosswise (LVL X). Laminated veneer lumber slabs are engineering wood products with several important performance characteristics, making them a sustainable and preferred solution in civil engineering. To ensure the safe operation of a building with LVL structural elements, it is important to know their dynamic properties. The basic dynamic characteristics of the slabs obtained from experimental tests made it possible to validate the numerical models of the slabs. The slab models were developed in the Abaqus program using the finite element method. The elastic and shear moduli of laminated veneer lumber used in the four slabs were identified through an optimization process in which the error between the analyzed frequencies from the laboratory tests and the numerical analyses was minimized. In the case of slabs that possess the same thickness and are composed of different LVL types, the elastic modulus of LVL R in the longitudinal direction was 1.16 times higher than the elastic modulus of LVL X in the same direction. However, the elastic moduli of LVL R in tangential and radial directions were lower than the elastic moduli of LVL X in the same directions. The above was the result of the fact that the 45 mm LVL X slab had 3 out of 15 veneers glued crosswise. In the case of slabs possessing different thicknesses but the same width and type, the elastic modulus of the thicker panel was 1.13 times higher than that of the thinner panel. After validating the models, the numerical analyses yielded results consistent with the experimental results. The numerical models of the LVL slabs will be used to develop numerical models of composite floors with LVL panels in future research. Such models will allow for the analysis of floor dynamic characteristics and user-generated vibrations, which is required when verifying the serviceability limit state.

Strony (od-do)

166-1 - 166-21

DOI

10.3390/su16010166

URL

https://www.mdpi.com/2071-1050/16/1/166

Uwagi

Article Number: 166

Typ licencji

CC BY (uznanie autorstwa)

Tryb otwartego dostępu

otwarte czasopismo

Wersja tekstu w otwartym dostępie

ostateczna wersja opublikowana

Czas udostępnienia publikacji w sposób otwarty

w momencie opublikowania

Punktacja Ministerstwa / czasopismo

100

Impact Factor

3,3 [Lista 2023]

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