Session Details
CS04: Fracture
Thursday, 12. October 2017; 13:30 - 15:30 Uhr in Raum 7.11
Sitzungsleitung: Timo Noll
13:30
Phase-Field Modelling of Crack Propagation in Elasto-Plastic Multilayered Materials
Zhengkun Liu (Otto von Guericke University Magdeburg), Daniel Juhre (Otto von Guericke University Magdeburg)
Kurzfassung:
The phase-field method has emerged as an extremely powerful technique to simulate crack propagation with significant success. Phase-field simulation of crack propagation in elasto-plastic multilayered materials is discussed in this work. Three fundamental cases are studied i.e. (i) crack propagation in a brittle material, (ii) in a ductile material and (iii) in a brittle-ductile composite. The numerical results demonstrate the mechanical performance of such a multilayered composite design.
Phase-Field Modelling of Crack Propagation in Elasto-Plastic Multilayered Materials
Zhengkun Liu (Otto von Guericke University Magdeburg), Daniel Juhre (Otto von Guericke University Magdeburg)
Kurzfassung:
The phase-field method has emerged as an extremely powerful technique to simulate crack propagation with significant success. Phase-field simulation of crack propagation in elasto-plastic multilayered materials is discussed in this work. Three fundamental cases are studied i.e. (i) crack propagation in a brittle material, (ii) in a ductile material and (iii) in a brittle-ductile composite. The numerical results demonstrate the mechanical performance of such a multilayered composite design.
13:50
Numerical investigation of hydraulic fracturing and borehole interaction under deep reservoir conditions using XFEM
Janis Reinold (Ruhr University Bochum), Sven Beckhuis (Ruhr University Bochum), Günther Meschke (Ruhr University Bochum)
Kurzfassung:
Hydraulic fracturing is a complex process, due to the interaction of the fracturing fluid with the surrounding deformable porous media, while the fracture is propagating. The fracture response is sensitive to in-situ stresses, fracture toughness or initial fracture angles. A hydro-mechanical XFEM model is introduced to simulate the fluid flow and deformation of the rock. Examples with multiple boreholes and initial fractures will investigate the influence of the aforementioned parameters.
Numerical investigation of hydraulic fracturing and borehole interaction under deep reservoir conditions using XFEM
Janis Reinold (Ruhr University Bochum), Sven Beckhuis (Ruhr University Bochum), Günther Meschke (Ruhr University Bochum)
Kurzfassung:
Hydraulic fracturing is a complex process, due to the interaction of the fracturing fluid with the surrounding deformable porous media, while the fracture is propagating. The fracture response is sensitive to in-situ stresses, fracture toughness or initial fracture angles. A hydro-mechanical XFEM model is introduced to simulate the fluid flow and deformation of the rock. Examples with multiple boreholes and initial fractures will investigate the influence of the aforementioned parameters.
CANCELLED Crack propagation simulation of concrete considering water fracture interaction using SBFEM
Chengbin Du (Hohai University), Peng Zhang (Hohai University), Xinran Tian (Hohai University)
Chengbin Du (Hohai University), Peng Zhang (Hohai University), Xinran Tian (Hohai University)
14:10
A 3D peridynamic model of rock cutting with TBM disc cutters
Sahir Butt (Ruhr University Bochum), Günther Meschke (Ruhr University Bochum)
Kurzfassung:
This study presents computational simulation of rock cutting process using disc cutters, a typical process involved in mechanized rock excavation works. Peridynamics, a nonlocal continuum formulation, is used to model the LCM (linear cutting machine) test of rock cutting with a single TBM (tunnel boring machine) disc cutter. The presented numerical model enables the investigation of different cutting forces as well as of the stress and pressure distribution during the tool-rock interaction.
A 3D peridynamic model of rock cutting with TBM disc cutters
Sahir Butt (Ruhr University Bochum), Günther Meschke (Ruhr University Bochum)
Kurzfassung:
This study presents computational simulation of rock cutting process using disc cutters, a typical process involved in mechanized rock excavation works. Peridynamics, a nonlocal continuum formulation, is used to model the LCM (linear cutting machine) test of rock cutting with a single TBM (tunnel boring machine) disc cutter. The presented numerical model enables the investigation of different cutting forces as well as of the stress and pressure distribution during the tool-rock interaction.