A micromechanical model for mechanosorptive creep in paper
2002 (English)In: Journal of Pulp and Paper Science (JPPS), ISSN 0826-6220, Vol. 28, no 3, 98-104 p.Article in journal (Refereed) Published
The creep of paper is accelerated by moisture cycling, a phenomenon known as mechanosorptive creep or accelerated creep. In this paper stress created at bonds due to anisotropic swelling during absorption and desorption of moisture, in combination with nonlinear creep, are proposed to be the cause for mechanosorptive creep. Two simplifled models are first discussed in order to demonstrate the suggested mechanism. A three-dimensional fibre network model composed of elastic fibres and inelastic bonds is then studied by finite element calculations. The relative sliding in the bonds is described by a nonlinear creep model which, in combination with anisotropic hygroexpansion of the fibres results in accelerated creep of the network.
Place, publisher, year, edition, pages
2002. Vol. 28, no 3, 98-104 p.
creep, moisture content, sorption, models, swelling, fiber bonding, fiber networks
Mechanical Engineering Materials Engineering
IdentifiersURN: urn:nbn:se:kth:diva-6101ISI: 000174392900006OAI: oai:DiVA.org:kth-6101DiVA: diva2:10717
QC 201010222004-11-302004-11-302010-10-22Bibliographically approved