This training is an introduction to continuous modeling with FLAC2D and FLAC3D. At the end of the course, participants will master the graphical interface, documentation and the main modeling steps. Concepts are illustrated using a tunnel excavation example, from building the model geometry to results analysis. This introductory course provides the foundation for more advanced use of the software, which can be covered in more specific training modules.
One of the main advantages of the discrete approach as defined by Itasca (PFC) is that it allows to accurately reproduce the size distribution, the grain shape (rounded, angular, or elongated), the mineralogical composition, as well as the mechanical and thermal properties of each mineral.
Thanks to this accurate description, it is possible to study the maximum compaction of a granular packing or the agglomeration of a powder under vibration/compression, to reproduce a real fibrous structure obtained from 3D tomographic images or the microstructure of composite materials. The relationship between the microstructure and target macroproperties—such as mechanical strength under various loadings (compression, tension, bending test), permeability, or electrical resistivity— can thereafter be investigated, and optimizations proposed.