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Nonlinear vibrations of a multi-span continuous beam subject to periodic impact excitation

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Excessive vibrations could result from vertical impact forces. An electromechanical device has been constructed on an experimental rig to investigate the frequency-dependent vibrations of a multi-span beam made of two parallel rods, for a stationary periodic impactor. Experimental time histories, phase planes and a bifurcation diagram are presented to illustrate to richness of the system dynamics. Both period one and period two responses have been observed, as well as more complicated (chaotic) outcomes.

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The technical contribution from Mr. Noor Hashimi Mohamad Nor is gratefully acknowledged.

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Correspondence to Sami Davtalab.

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Davtalab, S., Woo, KC., Pagwiwoko, C.P. et al. Nonlinear vibrations of a multi-span continuous beam subject to periodic impact excitation. Meccanica 50, 1227–1237 (2015).

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