Multi-scale modelling of hydraulic fracturing (B01)

• Subject Area: Mechanics ; Applied Mechanics, Statics and Dynamics
• Term: since 2018
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 327154368

Hydraulically induced fractures usually initiate at small (microscopic) length scales and then merge to larger (macroscopic) crack discontinuities. Furthermore, porous media show size dependencies with regard to their hydro-mechanical properties. The goal of the project is to resolve these inherent characteristics via scale-bridging techniques for porous media. The project is divided in three steps: (i) Development of a second-order homogenization approach for porous media; (ii) Incorporation of a fracture phase-field at micro-scale that takes account of heterogeneities via stochastification; (iii) Extension of the phase-field model to dynamic effects and development of a parallel multi-scale scheme.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1313: Interface-Driven Multi-Field Processes in Porous Media - Flow, Transport and Deformation -
• Applicant Institution: Universität Stuttgart
• Project Head: Professor Dr.-Ing. Marc-André Keip