Reference : Combined implicit/explicit algorithms for crashworthiness analysis
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/2268/219
Combined implicit/explicit algorithms for crashworthiness analysis
English
Noels, Ludovic mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Milieux continus et thermomécanique >]
Stainier, Laurent [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS - Milieux continus et thermomécanique >]
Ponthot, Jean-Philippe mailto [Université de Liège - ULg > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire >]
2004
International Journal of Impact Engineering
Pergamon-Elsevier Science Ltd
30
8-9, SEP-OCT
1161-1177
Yes (verified by ORBi)
International
0734-743X
Oxford
[en] implicit ; explicit ; dynamics ; finite element ; large strains
[en] In order to simulate an industrial process, an explicit method, which is conditionally stable, is the most adapted while the non-linearities evolve rapidly (impact phase, stamping process, etc.). But when the dynamics becomes quasi-linear (post-impact analysis, springback simulation, etc.), an implicit method, which is iterative, presents the advantage of unconditional stability. The optimal solution is then to have both implicit and explicit methods readily available in the same code and to be able to switch automatically from one to the other. Criteria that decide to switch from one method to another, depending on the current dynamics, have been developed. Implicit restarting conditions are also proposed that annihilate numerical oscillations resulting from an explicit calculation. (C) 2004 Elsevier Ltd. All rights reserved.
Researchers ; Professionals
http://hdl.handle.net/2268/219
10.1016/j.ijimpeng.2004.03.004
http://dx.doi.org/10.1016/j.ijimpeng.2004.03.004

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