Material Model for Anisotropic Viscoelasticity at Finite Deformations Applied to Pulp Fibres

Publikation: StudienabschlussarbeitMasterarbeit

Abstract

The goal of this thesis is to find a material model that is capable of describing the
behaviour of a pulp fibre. In the first major part of this thesis a general introduction to finite element analysis is given and the constitutive equations of the used material model are described. In the second major part the calibration of the material model parameters with nano indentation experiments is outlined.

An anisotropic viscoelastic material model for finite deformations is implemented into a finite element Matlab source code SOOFEA and in a user subroutine of ABAQUS. This implementation is then used to simulate nano indentations experiments. By iteratively adapting the material parameters the simulation results are fitted to the real experimental values. With that proceedure the material parameters can be calibrated.
Originalsprachedeutsch
QualifikationMaster of Science
Gradverleihende Hochschule
  • Institut für Festigkeitslehre (3040)
Betreuer/-in / Berater/-in
  • Ulz, Manfred Hannes, Betreuer
  • Hirn, Ulrich, Betreuer
Förderer
PublikationsstatusVeröffentlicht - Nov 2017

Schlagwörter

  • Nano Indentation
  • AFM
  • Pulp Fibres
  • Inverse Problem
  • Material Parameter Estimation
  • Finite Element Method
  • Finite Deformation
  • Hyperelasticity
  • Viscoelasticity
  • Anisotropy
  • Orthotropy
  • Structural Tensors
  • ABAQUS-UMAT
  • MATLAB-FEM
  • Dissipation Energy
  • Contact Problem

Projekte

CD-Labor für Faserquellung und deren Effekt auf die Papiereigenschaften

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.

1/12/1530/11/22

Projekt: Foschungsprojekt

Dieses zitieren