Computational Strategies for Speeding-Up F.E. Simulations of Metal Forming Processes
| Autor: | Fabien Delalondre, Lionel Fourment, Koffi K’podzo, Mohamad Ramadan, Frédéric Vi, Hugues Digonnet, Ugo Ripert |
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| Přispěvatelé: | Centre de Mise en Forme des Matériaux (CEMEF), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Ecole Polytechnique Fédérale de Lausanne (EPFL), Transvalor, Energy and Thermo-Fluid group, School of Engineering, Lebanese International University (LIU), Institut de Calcul Intensif (ICI), École Centrale de Nantes (ECN), Eugenio Oñate |
| Rok vydání: | 2017 |
| Předmět: |
Discretization
Material forming Computation Numerical analysis Arbitrary Lagrangian Eulerian path 010103 numerical & computational mathematics Multigrid Solver 01 natural sciences Finite element method Multi-mesh [SPI.MAT]Engineering Sciences [physics]/Materials 010101 applied mathematics symbols.namesake Multigrid method Remapping symbols Applied mathematics Polygon mesh 0101 mathematics Meshing Eulerian ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | Computational Methods in Applied Sciences ISBN: 9783319608846 Computational Methods in Applied Sciences Computational Methods in Applied Sciences, 46, Springer, pp.71-94, 2018 |
| DOI: | 10.1007/978-3-319-60885-3_4 |
| Popis: | International audience; An overview of various numerical methods developed for speeding-up computations is presented in the field of the bulk material forming under solid state, which is characterized by complex and evolving geometries requiring frequent remeshings and numerous time increments. These methods are oriented around the axis that constitutes the meshing problem. The multi-mesh method allows to optimally solve several physics involved on the same domain, according to its finite element discretization with several different meshes, for example in the cogging or cold pilgering processes. For quasi steady-state problems and problems with quite pronounced localization of deformation, such as Friction Stir Welding (FSW) or High Speed Machining, an Arbitrary Lagrangian or Eulerian formulation (ALE) with mesh adaptation shows to be imperative. When the problem is perfectly steady, as for the rolling of long products, the direct search for the stationary state allows huge accelerations. In the general case, where no process specificity can be used to solve the implicit equations, the multigrid method makes it possible to construct a much more efficient iterative solver, which is especially characterized by an almost linear asymptotic cost. |
| Databáze: | OpenAIRE |
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