Felix, J.L. Palácios [UNESP]Brasil, R. M L R FBalthazar, José Manoel [UNESP]Krasnopolskaya, T. S.Shevets, A. Y.2014-05-272014-05-272008-06-172007 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC2007, v. 5 PART C, p. 1701-1710.http://hdl.handle.net/11449/70437In practical situations, the dynamics of the forcing function on a vibrating system cannot be considered as given a priori, and it must be taken as a consequence of the dynamics of the whole system. In other words, the forcing source has limited power, as that provided by a DC motor for an example, and thus its own dynamics is influenced by that of the vibrating system being forced. This increases the number of degrees of freedom of the problem, and it is called a non-ideal problem. In this work, we considerer two non-ideal problems analyzed by using numerical simulations. The existence of the Sommerfeld effect was verified, that is, the effect of getting stuck at resonance (energy imparted to the DC motor being used to excite large amplitude motions of the supporting structure). We considered two kinds of non-ideal problem: one related to the transverse vibrations of a shaft carrying two disks and another to a piezoceramic bar transducer powered by a vacuum tube generated by a non-ideal source Copyright © 2007 by ASME.1701-1710engAt resonanceEnergy impartedForcing functionsinternational conferencesInternational designsLarge-amplitude motionsMulti-body system (MBS)Non-linearNon-linear dynamicsNumber of degrees of freedomNumerical simulationsPiezoceramic (PZT)Sommerfeld effectSupporting structuresTechnical conferencesTransverse vibrationsVibrating systemsArchitectural designComputer controlComputer networksComputer simulationComputersControl systemsDC generator motorsDC motorsDynamical systemsElectric motorsEngineeringInformation systemsMechanicsMotorsNonlinear programmingPhotoacoustic effectTechnologyVibrations (mechanical)DynamicsTrabalho apresentado em evento10.1115/DETC2007-35087WOS:000254517102028Acesso aberto2-s2.0-44949263035