20.500.12556/RUL-114508 Numerical analysis of moisture induced strains and stresses in glued-laminated timber Changes in relative humidity of the ambient air, RH (%), cause wetting and drying of wood material, which results in non-uniform moisture contents or moisture gradients, and consequently in moisture-induced stresses and strains in the glued-laminated timber (glulam) members. The aim of the present paper is to perform a hygro-mechanical analysis to predict the mechanical behavior of glulam specimens exposed to two RH regimes, causing wetting from 50% to 90% RH and drying from 90% to 50% RH, and compare the numerical to the experimental results. The aims are also to quantitatively analyze the influence of characteristic material parameters required in the multi-Fickian moisture transport model and the mechanical model on moisture-induced strains and stresses in glulam specimens and to determine the possibility of cracking of the material by analyzing the maximum tensile stresses perpendicular to the grain. Accurate numerical predictions of moisture contents and moisture-induced strains are obtained in the glulam specimens during wetting and drying as compared to the experimental results. The influence of a particular characteristic material parameter on moisture-induced strains and stresses is characterized as significant, but not crucial when a rough numerical estimation of the mechanical behavior of the glulam beam exposed to RH changes is required. mechanical model mechano-sorption multi-Fickian moisture transport model rheology tensile stress perpendicular to the grain wood mehanski model mehano-sorptivni učinek multi-Fckian model prenosa vlage reologija natezne napetosti pravokotno na vlakna les true true true De Gruyter Angleški jezik Angleški jezik Znanstveno delo 2020-03-03 15:24:39 2020-03-03 15:47:57 2022-08-26 03:50:56 0000-00-00 00:00:00 2019 0 0 Str. 1-13 2019 0000-00-00 Zaloznikova VTisku apc 0000-00-00 0000-00-00 0000-00-00 2020-10-01 624.04 0018-3830 10.1515/hf-2019-0025 8965217 9817605 [Holzforschung]_Numerical_analysis_of_moisture-induced_strains_and_stresses_in_glued-laminated_timber.pdf [Holzforschung]_Numerical_analysis_of_moisture-induced_strains_and_stresses_in_glued-laminated_timber.pdf 1 DB6F04721A3C5C58D560D99CB9009471 89f46f60c8e7af1bcf24f9ee774c6fdbc039209ef42bf98ae1fa6a709f4a4c34 3c7a7958-a1b8-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=126729 https://www.degruyter.com/view/j/hfsg.ahead-of-print/hf-2019-0025/hf-2019-0025.xml?format=INT 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=126733 Fakulteta za gradbeništvo in geodezijo 0 0 0