Calculation tool for estimation of the material properties of glulam beams with known layout

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.advisorJaaranen, Joonas
dc.contributor.authorMartus, Mariia
dc.contributor.schoolInsinööritieteiden korkeakoulufi
dc.contributor.supervisorFink, Gerhard
dc.date.accessioned2020-08-24T07:00:09Z
dc.date.available2020-08-24T07:00:09Z
dc.date.issued2020-08-17
dc.description.abstractProperties of glued laminated timber are subjected to large uncertainties. To increase material reliability and utilization ratio, these uncertainties should be handled more efficiently. The aim of this study was to develop a tool for reliable prediction of load-bearing capacity of glulam beams with well-known properties. Different models were applied in Monte-Carlo simulation framework and their performance were evaluated on the set of tested beams from literature. Prediction of bending strength as well as estimation of failure initiation location were of special interest. Using transformed cross-section method, influence of strength, stiffness and finger joint material models to the glulam properties estimation was evaluated. It was found that for better strength prediction lamination effect should be additionally taken into account in exploited lamination strength model. Simulation with this calibration gave significantly improved strength prediction for the beams. Established simple isotropic FEM model showed similar results as transformed cross-section method. When orthotropic material model was utilized, lower strength of beams was predicted. By means of fictitious crack approach in Abaqus, crack propagation and branching in glulam beams in bending were simulated. Established FEM model allowed simulation of progressive failure, however still leaving room for improvement in the strength prediction regard.en
dc.format.extent47+15
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/46197
dc.identifier.urnURN:NBN:fi:aalto-202008245136
dc.language.isoenen
dc.programmeMaster's Programme in Building Technology (CIV)fi
dc.programme.majorfi
dc.programme.mcodefi
dc.subject.keywordtimberen
dc.subject.keywordglulamen
dc.subject.keywordtransformed cross-section methoden
dc.subject.keywordFEMen
dc.subject.keywordHashin's failureen
dc.subject.keywordAbaqusen
dc.titleCalculation tool for estimation of the material properties of glulam beams with known layouten
dc.typeG2 Pro gradu, diplomityöfi
dc.type.ontasotMaster's thesisen
dc.type.ontasotDiplomityöfi
local.aalto.electroniconlyyes
local.aalto.openaccessyes
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