Elasto-plastic approach for paper cockling phenomenon: On the importance of moisture gradient

P. Lipponen (Corresponding Author), T. Leppänen, Jarmo Kouko, J. Hämäläinen

Research output: Contribution to journalArticleScientificpeer-review

20 Citations (Scopus)

Abstract

Cockling of paper is a common problem occurring in the production, storage and end-use of paper. It is usually induced by a moisture content change. In many cases, cockling is an irreversible phenomenon; i.e. the initial shape is not obtained although the initial moisture content is restored. This kind of moisture content change occurs in copying machines and in the printing process, for example. In this paper, we present a continuum mechanical model, which is used to study the irreversible cockling of paper. In the model, paper is treated as an orthotropic elasto-plastic material and the model takes into account the small-scale variation of fibre orientation. The model is used to show the importance of the through-thickness moisture gradient on the cockling phenomenon during a cyclic moisture content change. The results suggest that the moisture gradient is a crucial factor for the irreversible cockling.
Original languageEnglish
Pages (from-to)3596 - 3609
Number of pages14
JournalInternational Journal of Solids and Structures
Volume45
Issue number11-12
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Fingerprint

Moisture Content
Moisture
Elasto-plastic
moisture
moisture content
plastics
Plastics
Gradient
gradients
fiber orientation
Fiber Orientation
printing
Model
Copying
Continuum
Fiber reinforced materials
continuums
Printing

Keywords

  • elastoplasticity
  • finite element
  • finite element analysis
  • paper
  • non-homogenous material
  • cockling
  • moisture gradient

Cite this

@article{aaaf81df284f498d9728adf891c79fbd,
title = "Elasto-plastic approach for paper cockling phenomenon: On the importance of moisture gradient",
abstract = "Cockling of paper is a common problem occurring in the production, storage and end-use of paper. It is usually induced by a moisture content change. In many cases, cockling is an irreversible phenomenon; i.e. the initial shape is not obtained although the initial moisture content is restored. This kind of moisture content change occurs in copying machines and in the printing process, for example. In this paper, we present a continuum mechanical model, which is used to study the irreversible cockling of paper. In the model, paper is treated as an orthotropic elasto-plastic material and the model takes into account the small-scale variation of fibre orientation. The model is used to show the importance of the through-thickness moisture gradient on the cockling phenomenon during a cyclic moisture content change. The results suggest that the moisture gradient is a crucial factor for the irreversible cockling.",
keywords = "elastoplasticity, finite element, finite element analysis, paper, non-homogenous material, cockling, moisture gradient",
author = "P. Lipponen and T. Lepp{\"a}nen and Jarmo Kouko and J. H{\"a}m{\"a}l{\"a}inen",
year = "2008",
doi = "10.1016/j.ijsolstr.2008.02.017",
language = "English",
volume = "45",
pages = "3596 -- 3609",
journal = "International Journal of Solids and Structures",
issn = "0020-7683",
publisher = "Elsevier",
number = "11-12",

}

Elasto-plastic approach for paper cockling phenomenon : On the importance of moisture gradient. / Lipponen, P. (Corresponding Author); Leppänen, T.; Kouko, Jarmo; Hämäläinen, J.

In: International Journal of Solids and Structures, Vol. 45, No. 11-12, 2008, p. 3596 - 3609.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Elasto-plastic approach for paper cockling phenomenon

T2 - On the importance of moisture gradient

AU - Lipponen, P.

AU - Leppänen, T.

AU - Kouko, Jarmo

AU - Hämäläinen, J.

PY - 2008

Y1 - 2008

N2 - Cockling of paper is a common problem occurring in the production, storage and end-use of paper. It is usually induced by a moisture content change. In many cases, cockling is an irreversible phenomenon; i.e. the initial shape is not obtained although the initial moisture content is restored. This kind of moisture content change occurs in copying machines and in the printing process, for example. In this paper, we present a continuum mechanical model, which is used to study the irreversible cockling of paper. In the model, paper is treated as an orthotropic elasto-plastic material and the model takes into account the small-scale variation of fibre orientation. The model is used to show the importance of the through-thickness moisture gradient on the cockling phenomenon during a cyclic moisture content change. The results suggest that the moisture gradient is a crucial factor for the irreversible cockling.

AB - Cockling of paper is a common problem occurring in the production, storage and end-use of paper. It is usually induced by a moisture content change. In many cases, cockling is an irreversible phenomenon; i.e. the initial shape is not obtained although the initial moisture content is restored. This kind of moisture content change occurs in copying machines and in the printing process, for example. In this paper, we present a continuum mechanical model, which is used to study the irreversible cockling of paper. In the model, paper is treated as an orthotropic elasto-plastic material and the model takes into account the small-scale variation of fibre orientation. The model is used to show the importance of the through-thickness moisture gradient on the cockling phenomenon during a cyclic moisture content change. The results suggest that the moisture gradient is a crucial factor for the irreversible cockling.

KW - elastoplasticity

KW - finite element

KW - finite element analysis

KW - paper

KW - non-homogenous material

KW - cockling

KW - moisture gradient

U2 - 10.1016/j.ijsolstr.2008.02.017

DO - 10.1016/j.ijsolstr.2008.02.017

M3 - Article

VL - 45

SP - 3596

EP - 3609

JO - International Journal of Solids and Structures

JF - International Journal of Solids and Structures

SN - 0020-7683

IS - 11-12

ER -