Academic Journal
Free Vibrations of Sustainable Laminated Veneer Lumber Slabs
| العنوان: | Free Vibrations of Sustainable Laminated Veneer Lumber Slabs |
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| المؤلفون: | Małgorzata Abramowicz, Marcin Chybiński, Łukasz Polus, Tomasz Wróblewski |
| المصدر: | Sustainability, Vol 16, Iss 1, p 166 (2023) |
| بيانات النشر: | MDPI AG |
| سنة النشر: | 2023 |
| المجموعة: | Directory of Open Access Journals: DOAJ Articles |
| مصطلحات موضوعية: | vibrations, sustainable laminated veneer lumber slabs, modal parameters, natural frequency, Environmental effects of industries and plants, TD194-195, Renewable energy sources, TJ807-830, Environmental sciences, GE1-350 |
| الوصف: | 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 ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2071-1050 |
| Relation: | https://www.mdpi.com/2071-1050/16/1/166; https://doaj.org/toc/2071-1050; https://doaj.org/article/3ead3ed364514461b196121dfd8ed011 |
| DOI: | 10.3390/su16010166 |
| الاتاحة: | https://doi.org/10.3390/su16010166 https://doaj.org/article/3ead3ed364514461b196121dfd8ed011 |
| رقم الانضمام: | edsbas.8B36351A |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20711050 |
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| DOI: | 10.3390/su16010166 |