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.
In order to be able to create a volume mesh, it is necessary that selected surface meshes provide a watertight domain (or several domains), meaning that it is closed and does not contain any holes (so that the model has clear separation between the interior and exterior).
GHeal is a Griddle utility that can be used to identify certain surface mesh problems and fix them. In automatic mode, GHeal helps with such issues as:
These functions may be run altogether or individually, which in certain cases may be preferable. In general, GHeal functions often identify and clean mesh problems more efficiently than user efforts to fix a mesh manually or by using the built-in Rhino mesh repair tools. Detailed, custom manual mesh editing using Rhino mesh repair tools are always available (e.g., patching a single hole where the user must select the boundary of the hole).