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Simulation of drying stresses in Wood. Part I: comparison between one- and two-dimensional models

Svensson, Staffan LU and Mårtensson, Annika LU (1999) In Holz als Roh- und Werkstoff 57(2). p.129-136
Abstract
A number of rheological models of drying wood have been

presented during the last ten years. At the material point

level, most models show high accuracy. The models in

themselves, however, have no value unless used for improving

wood drying, technique, quality, etc. To achieve

this, they have to be implemented in applicable programs/

methods. In this article, the implementation of a material

model calibrated on small clear wood specimen is presented.

The strain (cup-deformations) and the internal

stresses (indicator of surface checks and internal collapse)

of the boards cross-section are calculated for given moisture

histories. Comparisons... (More)
A number of rheological models of drying wood have been

presented during the last ten years. At the material point

level, most models show high accuracy. The models in

themselves, however, have no value unless used for improving

wood drying, technique, quality, etc. To achieve

this, they have to be implemented in applicable programs/

methods. In this article, the implementation of a material

model calibrated on small clear wood specimen is presented.

The strain (cup-deformations) and the internal

stresses (indicator of surface checks and internal collapse)

of the boards cross-section are calculated for given moisture

histories. Comparisons with test results concerning

cupping show that the model can describe the deformation

of a board cross-section. It is also shown that in many

cases a simple analytical solution can be used to determine

the cupping. Comparisons between two-dimensional and

one-dimensional calculations show that the one-dimensional

formulation in many cases is suf®cient to describe

the maximum internal stresses during drying as function

of time. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Holz als Roh- und Werkstoff
volume
57
issue
2
pages
129 - 136
publisher
Springer
external identifiers
  • Scopus:0033118137
DOI
10.1007/s001070050028
language
English
LU publication?
yes
id
7efae9ef-35df-4886-a306-3c52bbd14a59 (old id 1698309)
date added to LUP
2010-10-22 15:30:50
date last changed
2016-04-16 11:26:33
@misc{7efae9ef-35df-4886-a306-3c52bbd14a59,
  abstract     = {A number of rheological models of drying wood have been<br/><br>
presented during the last ten years. At the material point<br/><br>
level, most models show high accuracy. The models in<br/><br>
themselves, however, have no value unless used for improving<br/><br>
wood drying, technique, quality, etc. To achieve<br/><br>
this, they have to be implemented in applicable programs/<br/><br>
methods. In this article, the implementation of a material<br/><br>
model calibrated on small clear wood specimen is presented.<br/><br>
The strain (cup-deformations) and the internal<br/><br>
stresses (indicator of surface checks and internal collapse)<br/><br>
of the boards cross-section are calculated for given moisture<br/><br>
histories. Comparisons with test results concerning<br/><br>
cupping show that the model can describe the deformation<br/><br>
of a board cross-section. It is also shown that in many<br/><br>
cases a simple analytical solution can be used to determine<br/><br>
the cupping. Comparisons between two-dimensional and<br/><br>
one-dimensional calculations show that the one-dimensional<br/><br>
formulation in many cases is suf®cient to describe<br/><br>
the maximum internal stresses during drying as function<br/><br>
of time.},
  author       = {Svensson, Staffan and Mårtensson, Annika},
  language     = {eng},
  number       = {2},
  pages        = {129--136},
  publisher    = {ARRAY(0x92d4120)},
  series       = {Holz als Roh- und Werkstoff},
  title        = {Simulation of drying stresses in Wood. Part I: comparison between one- and two-dimensional models},
  url          = {http://dx.doi.org/10.1007/s001070050028},
  volume       = {57},
  year         = {1999},
}