Uniaxial compression of fibre networks – the synergetic effect of adhesion and elastoplasticity on non-reversible deformation
Artikel i vetenskaplig tidskrift, 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

Författare

Per Bergström

Essity Hygiene and Health AB

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Charlotta Hanson

Essity Hygiene and Health AB

Chalmers, Kemi och kemiteknik, Kemiteknik

Henrik Ström

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Srdjan Sasic

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Powder Technology

0032-5910 (ISSN)

Vol. 395 301-313

Ämneskategorier

Teknisk mekanik

Pappers-, massa- och fiberteknik

Annan materialteknik

DOI

10.1016/j.powtec.2021.09.061

Mer information

Senast uppdaterat

2021-11-11