Reference : Iterative Solvers for Large Pressure Dependent Problems
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/2268/17112
Iterative Solvers for Large Pressure Dependent Problems
English
Boman, Romain mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire >]
Colantonio, Laurent [> >]
Ponthot, Jean-Philippe mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire >]
Jun-1998
Proceedings of the Sixth International Conference on Numerical Methods in Industrial Forming Processes
Huétink, J.
Baaijens, F. P. T.
225-231
Yes
No
International
NUMIFORM'98
June 22-25, 1998
University of Twente, Enschede
The Netherlands
[en] iterative solvers ; GMRES ; compaction of powders ; preconditioners
[en] In this paper, we present a stress update scheme for non-deviatoric elastoviscoplastic models, which can be considered as an extension of the radial return method for classical plasticity. We use the unconditionally stable backward Euler scheme to obtain the viscoplastic solution at each increment. To solve the large sparse non symmetric iteration matrix, we use the GMRES method. This fast iterative solver, in conjunction with an appropriate preconditioner, can save a lot a memory and CPU time when 3D problem are considered. A comparison between direct and iterative solvers will be discussed on two applications of cold compaction of powders.
Researchers
http://hdl.handle.net/2268/17112

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