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Elastic-plastic material characteristics at different moisture content level
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SYSNO ASEP 0509038 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Elastic-plastic material characteristics at different moisture content level Author(s) Milch, J. (CZ)
Brabec, M. (CZ)
Tippner, J. (CZ)
Sebera, V. (CZ)
Kunecký, Jiří (UTAM-F) RID, SAI, ORCIDNumber of authors 5 Source Title Proceedings of the International conference on structural health assessment of timber structures, SHATiS’2019. - Guimarães : Universidade do Minho, 2019 / Branco J. M. ; Poletti E. ; Sousa H. S. - ISBN 978-989-54496-2-0 Pages s. 609-618 Number of pages 10 s. Publication form Medium - C Action International conference on structural health assessment of timber structures, SHATiS’2019 /5./ Event date 25.09.2019 - 27.09.2019 VEvent location Guimarães Country PT - Portugal Event type CST Language eng - English Country PT - Portugal Keywords experimental testing ; elastic-plastic behaviour ; hard wood ; FEA ; moisture content Subject RIV JM - Building Engineering OECD category Construction engineering, Municipal and structural engineering R&D Projects DG16P02M026 GA MK - Ministry of Culture (MK) Annotation The mechanical properties of wood are strongly dependent on moisture content (MC), which affects the mechanical performance of wooden structures or single timber elements subjected to environment changes. This should be taken into account when choosing a material for individual applications. Current assessment options offers more than experimental testing, sophisticated modelling tools such as finite element analysis (FEA) can accurately predict the moistureaffected mechanical behaviour of wooden structures. For this purpose FEA requires the specific material characteristics of wood at different MC levels. The goal of this work is to model the elastic-plastic mechanical behaviour of Oak wood (Quercus L.) at different MC levels. In order to achieve this goal, these partial steps were fulfilled: (a) performing of in-house standard tests (compression, tension, shear and three-point bending) at 20°C and 65% and 100% of relative humidity (RH) environment, (b) collecting of all needed material characteristics and populating of material models for FEA, (c) validation of the material models by confronting of predicted mechanical behaviour with experimental one on a simple wooden object, and (d) calibration of material models by iterative changing of individual material characteristics until the prediction was consistent with a reference. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2020
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