Projects per year
Abstract
A computationally efficient method to study the in-plane and out-of-plane dimensional instability of thin paper sheets under the influence of moisture changes is presented. The method explicitly resolves the bonded and the free segments of fibers in the sheet, capturing the effect of anisotropic hygroexpansion at the fiber level. The method is verified against a volumetric model. The importance of longitudinal fiber hygroexpansion is demonstrated in spite of the absolute value of longitudinal hygroexpansion being an order of magnitude lower than the transverse hygroexpansion component. Finally, the method is used to demonstrate the formation of macroscopic sheet curl due to a moisture gradient in structurally uniform sheets in the absence of viscoelastic or plastic constitutive behavior and through-thickness residual stress profiles.
Original language | English |
---|---|
Pages (from-to) | 302-313 |
Number of pages | 12 |
Journal | International Journal of Solids and Structures |
Volume | 193-194 |
DOIs | |
Publication status | Published - 1 Jun 2020 |
Keywords
- Anisotropic
- Curl
- Drying
- Fiber network
- Finite element method
- Hygroexpansion
- Moisture
- Multiscale
- Paper
- Shrinkage
- Simulation
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Applied Mathematics
- Materials Science(all)
- Modelling and Simulation
Projects
- 1 Active
-
CD-Laboratory for Fiber Swelling and Paper Performance
Hirn, U., Lahti, J. A., Schennach, E., Fischer, W. J., Czibula, C. M., Urstöger, G. J., Ganser, C., Schuller, M., Krainer, S., Xhori, R., Spirk, S. & Niegelhell, K.
1/12/15 → 30/11/23
Project: Research project