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On normal form calculations in impact oscillators
KTH, Superseded Departments, Mechanics.
2000 (English)In: Proceedings of the Royal Society. Mathematical, Physical and Engineering Sciences, ISSN 1364-5021, E-ISSN 1471-2946, Vol. 456, no 1994, 315-329 p.Article in journal (Refereed) Published
Abstract [en]

Normal form calculations are useful for analysing the dynamics close to bifurcations. However, the application to non-smooth systems is a topic for current research. Here we consider a class of impact oscillators, where we allow systems with several degrees of freedom as well as nonlinear equations of motion. Impact is due to the motion of one body, constrained by a motion limiter. The velocities of the system are assumed to change instantaneously at impact. By defining a discontinuity mapping, we show how Poincare mappings can be obtained as an expansion in a local coordinate. This gives the mapping the desired form, thus making it possible to employ standard techniques. All calculations are algorithmic in spirit, hence computer algebra routines can easily be developed.

Place, publisher, year, edition, pages
2000. Vol. 456, no 1994, 315-329 p.
Keyword [en]
impact oscillations, normal forms, non-smooth systems, discontinuity mapping, computer algebra, harmonically excited system, rigid amplitude constraints, grazing-incidence, dynamics, bifurcations, behavior, motions, model, chaos
Identifiers
URN: urn:nbn:se:kth:diva-19582ISI: 000085556200004OAI: oai:DiVA.org:kth-19582DiVA: diva2:338274
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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