Abstract
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.
Original language  German 

Qualification  Master of Science 
Awarding Institution 

Supervisors/Advisors 

Thesis sponsors  
Publication status  Published  Nov 2017 
Keywords
Cite this
Material Model for Anisotropic Viscoelasticity at Finite Deformations Applied to Pulp Fibres. / Seidlhofer, Tristan.
2017. 105 p.Research output: Thesis › Master's Thesis › Research
}
TY  THES
T1  Material Model for Anisotropic Viscoelasticity at Finite Deformations Applied to Pulp Fibres
AU  Seidlhofer, Tristan
PY  2017/11
Y1  2017/11
N2  The goal of this thesis is to find a material model that is capable of describing thebehaviour 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.
AB  The goal of this thesis is to find a material model that is capable of describing thebehaviour 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.
KW  Nano Indentation
KW  AFM
KW  Pulp Fibres
KW  Inverse Problem
KW  Material Parameter Estimation
KW  Finite Element Method
KW  Finite Deformation
KW  Hyperelasticity
KW  Viscoelasticity
KW  Anisotropy
KW  Orthotropy
KW  Structural Tensors
KW  ABAQUSUMAT
KW  MATLABFEM
KW  Dissipation Energy
KW  Contact Problem
M3  Masterarbeit
ER 