Uniaxial compression of fibre networks – the synergetic effect of adhesion and elastoplasticity on non-reversible deformation
Journal article, 2022

In this paper we study numerically and experimentally non-reversible deformation of anisotropic, semi-flexible fibre networks. We formulate a Discrete Element Model (DEM) with bonded particles to simulate uniaxial compression of such networks and use this model to describe and quantify the effect of elasto-plastic fibre contacts and fibre-fibre adhesion on non-reversible deformation. Our results show that inter-fibre adhesion plays a role for compression in a low solid volume fraction range where adhesive forces can overcome fibre deformation forces and moments. Also, elasto-plastic contacts between fibres become important at higher solid volume fractions when the yield criterion is exceeded. The combined case of fibres having elasto-plastic contacts and adhesion shows a significant synergetic effect leading to a degree of non-reversible deformation of the network far beyond that of networks with only elasto-plastic fibre contacts or inter-fibre adhesion.

Elasto-plastic fibre contacts

Adhesive interaction of fibres

Discrete element model

Non-reversible network deformation

Author

Per Bergström

Essity Hygiene and Health AB

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Charlotta Hanson

Essity Hygiene and Health AB

Chalmers, Chemistry and Chemical Engineering, Chemical Technology

Henrik Ström

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Srdjan Sasic

Chalmers, Mechanics and Maritime Sciences, Fluid Dynamics

Powder Technology

0032-5910 (ISSN)

Vol. 395 301-313

Subject Categories

Applied Mechanics

Paper, Pulp and Fiber Technology

Other Materials Engineering

DOI

10.1016/j.powtec.2021.09.061

More information

Latest update

11/11/2021