Short comments on self-synchronization of two non-ideal sources supported by a flexible portal frame structure
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Data
2004-12-01
Autores
Balthazar, José Manoel [UNESP]
Felix, JLP
Brasil, RMLRF
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Editor
Sage Publications Ltd
Resumo
A practical problem of synchronization of a non-ideal (i.e. when the excitation is influenced by the response of the system) and non-linear vibrating system was posed and investigated by means of numerical simulations. Two rotating unbalanced motors compose the mathematical model considered here with limited power supply mounted on the horizontal beam of a simple portal frame. As a starting point, the problem is reduced to a four-degrees-of-freedom model and its equations of motion, derived elsewhere via a Lagrangian approach, are presented. The numerical results show the expected phenomena associated with the passage through resonance with limited power. Further, for a two-to-one relationship between the frequencies associated with the first symmetric mode and the sway mode, by using the variation of torque constants, the control of the self-synchronization and synchronization (in the system) are observed at certain levels of excitations.
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Palavras-chave
non-ideal source, portal plane frame, internal resonance
Como citar
Journal of Vibration and Control. London: Sage Publications Ltd, v. 10, n. 12, p. 1739-1748, 2004.