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Mechanics of Composite Materials
Published in: Mechanics of Composite Materials 2/2018

12-05-2018

Justification of the Production Process of Pressed Wood and Study of its Properties

Authors: A. N. Polilov, O. R. Dornyak, V. A. Shamaev, M. M. Rumachik

Published in: Mechanics of Composite Materials | Issue 2/2018

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Abstract

Results of a numerical analysis of the stress-strain state of wood during its pressing in different symmetry directions of the anisotropic material are presented. It is shown that the anisotropy of mechanical properties of wood is an important factor determining both the structural characteristics of the porous system and its strength. A mathematical modeling of the process of pressing wood as a three-phase anisotropic rheologically complex capillary-porous system allows one to predict parameters of the resulting wood composite. The compressed wood obtained by the production modes developed has a tensile strength eight times greater than that of the natural one, which is comparable to the strength of the St3 steel, but its specific strength is higher than that of the St45 steel. Compression and impregnation of softwood species with an aqueous solution of carbamide allows one to harden them. This kind of treatment endows the wood with enhanced strength characteristics comparable to the characteristics of the St3 steel. The special features of tensile tests used to estimate the elastic modulus and strength characteristics of such materials are considered. Data obtained by different testing methods are correlated, and characteristics of the strengthened wood and some brends of steel are compared.
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Metadata
Title
Justification of the Production Process of Pressed Wood and Study of its Properties
Authors
A. N. Polilov
O. R. Dornyak
V. A. Shamaev
M. M. Rumachik
Publication date
12-05-2018
Publisher
Springer US
Published in
Mechanics of Composite Materials / Issue 2/2018
Print ISSN: 0191-5665
Electronic ISSN: 1573-8922
DOI
https://doi.org/10.1007/s11029-018-9733-9

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