Abstract :
[en] The conceptofnonlinearnormalmodes(NNMs)isdiscussedinthepresentpaperandits
companion,PartI.OnereasonofthestilllimiteduseofNNMsinstructuraldynamicsis
that theircomputationisoftenregardedasimpractical.However,whenresortingto
numericalalgorithms,weshowthattheNNMcomputationispossiblewithlimited
implementationeffort,whichpavesthewaytoapracticalmethodfordeterminingthe
NNMsofnonlinearmechanicalsystems.Theproposedalgorithmreliesontwomain
techniques,namelyashootingprocedureandamethodforthecontinuationofNNM
motions. Thealgorithmisdemonstratedusingfourdifferentmechanicalsystems,a
weakly andastronglynonlineartwo-degree-of-freedomsystem,asimplifieddiscrete
modelofanonlinearbladeddiskandanonlinearcantileverbeamdiscretizedbythefinite
elementmethod.
Disciplines :
Mechanical engineering
Mathematics
Computer science
Engineering, computing & technology: Multidisciplinary, general & others
Scopus citations®
without self-citations
427