| Project name | Development of a Dynamic Particle Finite Element Method (PFEM) for Geotechnical Applications |
|---|---|
| Acronym | PFEM |
| Project partner |
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| Grantor | DFG (Project 517723402) |
| Duration | from: 05.03.2023 to: 05.03.2026 |
|
Research field |
E+E (E+E > Energy + Environment I+I > Information + Intelligence M+M > Matter + Materials) |
| Project content |
The simulation of installation processes, landslides, or ground improvement measures remains a major challenge for current numerical methods. In particular, the complex deformation states that arise in connection with significant topological changes cannot yet be captured satisfactorily. The “Particle Finite Element Method” (PFEM) enables the modelling of such complex topological changes while also accounting for sophisticated non-linear material models. It combines the established Finite Element Method (FEM) with continuous remeshing, thereby reducing excessive mesh distortion. Within this project the PFEM is developed for application in coupled dynamic problems, that are frequently encountered in geotechnics. Therefore, inertia terms as well as wave propagation phenomena in saturated porous media are included. In the PFEM, the boundary recovery is usually based on the so-called \alpha-shape method. For this purpose, a soil mechanics motivated approach for the determination of the parameter \alpha is developed. The modelling and development of algorithms is done in an interdisciplinary cooperation between geotechnics and mechanics. The methods will be tested with benchmark problems and geotechnical applications. Furthermore, comparisons with experimental data are drawn. |
