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Simulation of network shrinkage

Salminen, LI; Alava, MJ; Heyden, Susanne LU ; Gustafsson, Per-Johan LU and Niskanen, KJ (2002) In Nordic Pulp & Paper Research Journal 17(2). p.105-110
Abstract
We report numerical simulations oil shrinkage in a fiber network when the fibers shrink more in their transverse to length direction than the axial direction. The effect of network density and anisotropic fiber properties on sheet shrinkage, elastic modulus and segment strain distributions is explored. The macroscopic free shrinkage follows a simple mathematical expression that is consistent with the hygroexpansivity theory of Uesaka. The shrinkage of fiber segments agrees qualitatively with the microscopic measurements of Nanko and Wu. In addition, we found that in free drying the mean length changes of free and bonded fiber segments are almost independent of network density.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
mechanics, shrinkage, simulation, stress, fibers, network
in
Nordic Pulp & Paper Research Journal
volume
17
issue
2
pages
105 - 110
publisher
Arbor Publishing AB
external identifiers
  • wos:000176358700001
  • scopus:0036082018
ISSN
0283-2631
DOI
10.3183/NPPRJ-2002-17-02-p105-110
language
English
LU publication?
yes
id
bd1689a5-7973-4b9f-be56-9e8029da9738 (old id 334739)
date added to LUP
2007-11-07 18:03:01
date last changed
2017-01-01 07:01:49
@article{bd1689a5-7973-4b9f-be56-9e8029da9738,
  abstract     = {We report numerical simulations oil shrinkage in a fiber network when the fibers shrink more in their transverse to length direction than the axial direction. The effect of network density and anisotropic fiber properties on sheet shrinkage, elastic modulus and segment strain distributions is explored. The macroscopic free shrinkage follows a simple mathematical expression that is consistent with the hygroexpansivity theory of Uesaka. The shrinkage of fiber segments agrees qualitatively with the microscopic measurements of Nanko and Wu. In addition, we found that in free drying the mean length changes of free and bonded fiber segments are almost independent of network density.},
  author       = {Salminen, LI and Alava, MJ and Heyden, Susanne and Gustafsson, Per-Johan and Niskanen, KJ},
  issn         = {0283-2631},
  keyword      = {mechanics,shrinkage,simulation,stress,fibers,network},
  language     = {eng},
  number       = {2},
  pages        = {105--110},
  publisher    = {Arbor Publishing AB},
  series       = {Nordic Pulp & Paper Research Journal},
  title        = {Simulation of network shrinkage},
  url          = {http://dx.doi.org/10.3183/NPPRJ-2002-17-02-p105-110},
  volume       = {17},
  year         = {2002},
}