Session Details
CS06: Interface Models and Homogenization
Thursday, 12. October 2017; 10:30 - 12:30 Uhr in Raum 7.04
Sitzungsleitung: Arne Hansen-Dörr
10:30
General imperfect interface models at finite deformations
Tim Heitbreder (TU Dortmund University), Jörn Mosler (TU Dortmund University)
Kurzfassung:
Considering a geometrically exact description, only isotropic classical cohesive zone models fulfill fundamental principles such as material frame indifference and thermodynamical consistency. The ability to model shear and anisotropy is limited. Within this talk, a novel interface model, which is consistent with the above mentioned fundamental principles, is presented. Besides the simulation of anisotropic hyperelasticity, numerical results for anisotropic material degradation are shown.
General imperfect interface models at finite deformations
Tim Heitbreder (TU Dortmund University), Jörn Mosler (TU Dortmund University)
Kurzfassung:
Considering a geometrically exact description, only isotropic classical cohesive zone models fulfill fundamental principles such as material frame indifference and thermodynamical consistency. The ability to model shear and anisotropy is limited. Within this talk, a novel interface model, which is consistent with the above mentioned fundamental principles, is presented. Besides the simulation of anisotropic hyperelasticity, numerical results for anisotropic material degradation are shown.
CANCELLED Improvement in the accordance of numerical and experimental analysis of a T-joint automotive structure made of composite
Carlo Boursier Niutta (Politecnico di Torino), Giovanni Belingardi (Politecnico di Torino)
Carlo Boursier Niutta (Politecnico di Torino), Giovanni Belingardi (Politecnico di Torino)
10:50
Computational modelling of wear and the effective frictional behaviour of elastoplastic tools
Rolf Berthelsen (TU Dortmund University), Hendrik Wilbuer (TU Dortmund University), Andreas Menzel (TU Dortmund University)
Kurzfassung:
Sheet bulk metal forming tools are often structured, either to favour material flow in desired directions, or to reduce the process forces. During continuous operation, the structures of the tools suffer from material wear which in turn effects the frictional behaviour that is responsible for the favoured flow directions. In order to capture both effects numerically, this contribution presents a framework for the modelling of wear and the effective frictional behaviour of elastoplastic tools.
Computational modelling of wear and the effective frictional behaviour of elastoplastic tools
Rolf Berthelsen (TU Dortmund University), Hendrik Wilbuer (TU Dortmund University), Andreas Menzel (TU Dortmund University)
Kurzfassung:
Sheet bulk metal forming tools are often structured, either to favour material flow in desired directions, or to reduce the process forces. During continuous operation, the structures of the tools suffer from material wear which in turn effects the frictional behaviour that is responsible for the favoured flow directions. In order to capture both effects numerically, this contribution presents a framework for the modelling of wear and the effective frictional behaviour of elastoplastic tools.
11:10
A homogenisation method based on the Irving-Kirkwood-Theory
Maximilian Müller (Technical University of Darmstadt), Friedrich Gruttmann (Technical University of Darmstadt)
Kurzfassung:
In this contribution a homogenisation method based on the Irving-Kirkwood theory is introduced. The homogenisation formulas for mass and impulse are consistent with the theory and from there homogenisation formulas for the stress tensor and body force vector are derived. A numerical implementation of the theory is shown and examples with various boundary conditions are presented and compared to results obtained with a Hill-Mandel-approach as well as a full scale approach.
A homogenisation method based on the Irving-Kirkwood-Theory
Maximilian Müller (Technical University of Darmstadt), Friedrich Gruttmann (Technical University of Darmstadt)
Kurzfassung:
In this contribution a homogenisation method based on the Irving-Kirkwood theory is introduced. The homogenisation formulas for mass and impulse are consistent with the theory and from there homogenisation formulas for the stress tensor and body force vector are derived. A numerical implementation of the theory is shown and examples with various boundary conditions are presented and compared to results obtained with a Hill-Mandel-approach as well as a full scale approach.