The effect of temperature and moisture content on the mechanical behaviour of wood: a comprehensive model applied to drying and bending
This paper proposes a model able to simulate heat and mass transfer and mechanical behaviour of a wooden board during processing. The coupled heat and mass transfer equations are solved using an existing computational model named TransPore. From the moisture content and temperature profiles, a rigor...
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Published in | European journal of mechanics, A, Solids Vol. 26; no. 3; pp. 558 - 572 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Paris
Elsevier Masson SAS
01.05.2007
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | This paper proposes a model able to simulate heat and mass transfer and mechanical behaviour of a wooden board during processing. The coupled heat and mass transfer equations are solved using an existing computational model named
TransPore. From the moisture content and temperature profiles, a rigorous one-dimensional formulation and a relevant constitutive model are used to calculate the stress and strain evolution within the board due to shrinkage or external loading. This allows a fast, comprehensive and realistic model to be implemented. Used as a tool, it allowed us to gain new insights into industrial operations:
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the post-drying storage stage instead of the drying operation by itself is responsible for the high risk of checking encountered when drying thick boards;
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the hydro-thermal activation is of utmost importance in wood bending and subsequent shape freezing. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0997-7538 1873-7285 |
DOI: | 10.1016/j.euromechsol.2006.09.008 |