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.
KeywordsVibrations of continuous structure Time histories Bifurcation diagram Experimental dynamics
The technical contribution from Mr. Noor Hashimi Mohamad Nor is gratefully acknowledged.
- 1.Wiercigroch M, Krivtsov AM, Wojewoda J (2008) Vibrational energy transfer via modulated impacts for percussive drilling. J Theor Appl Mech 46(3):715–726Google Scholar
- 5.Williams D, Godden WG (1976) Experimental model studies on the seismic response of high curved overcrossing. 00159388 National Technical Information Service Google Scholar
- 15.Cheung MMS, Yang C-Y, Pan Y, Xiong F (2013) An experimental approach to study the non-uniform excitation effects on long span bridges. Research and applications in structural engineering, mechanics and computation: proceedings of the 5th international conference on structural engineering, mechanics and computation, SEMC 2013, p 271–276Google Scholar
- 17.Nakamura S-I (2003) Field measurements of lateral vibration on a pedestrian suspension bridge. J Struct Eng 81(22):22–26Google Scholar