Reference : Energy conserving balance of explicit time steps to combine implicit and explicit algori...
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/2268/274
Energy conserving balance of explicit time steps to combine implicit and explicit algorithms in structural dynamics
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 >]
2006
Computer Methods in Applied Mechanics & Engineering
Elsevier Science Sa
195
19-22
2169–2192
Yes (verified by ORBi)
International
0045-7825
Lausanne
Switzerland
[en] structural dynamics ; implicit ; explicit ; time integration ; energy conserving
[en] Recent developments have proved the advantage of combining both time implicit and time explicit integration algorithms in structural dynamics. A major problem is to define the initial conditions for the implicit simulation on the basis of a solution obtained from an unbalanced explicit resolution. The unbalanced nature of the explicit algorithm leads to oscillations in the fields of interest. Therefore, the values obtained after an explicit computation cannot be used directly as initial conditions for an implicit simulation. In this paper, we develop such initial values that lead to a stable (no numerical creation of energy) and energy-conserving transition. (c) 2005 Elsevier B.V. All rights reserved.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers
http://hdl.handle.net/2268/274
10.1016/j.cma.2005.03.003
http://dx.doi.org/10.1016/j.cma.2005.03.003

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