The effect of dynamical self-orientation and its applicability for identification of natural frequencies |
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Authors: | Minvydas Ragulskis Kazimieras Ragulskis |
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Institution: | (1) Department of Mathematical Research in Systems, Kaunas University of Technology, Studentu 50-222, Kaunas, LT-51368, Lithuania;(2) Department of Technical Sciences, Lithuanian Academy of Sciences, Vilnius, Lithuania |
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Abstract: | The effect of dynamical self-orientation and its applicability for the identification of natural frequencies of the investigated
systems is demonstrated in this paper. Unidirectional vibration exciter is fixed to the investigated systems via a pivot link
and can rotate around it. It is shown that the exciter changes its orientation in the steady state motion mode when the frequency
of excitation sweeps over the fundamental frequency of the examined system. Approximate analytical analysis of the discrete
system illustrates the basic principle of the effect of dynamical self-orientation. Numerical analysis of both the discrete
and different continuous elastic systems confirms the applicability of the effect of self-orientation for the identification
of natural frequencies. |
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Keywords: | Self-orientation Natural frequencies Pendulum Vibration Chaos |
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