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An experimental study of the impulse response of a vibro-impacting cantilever beam

Wagg, DJ; Karpodinis, G; Bishop, SR; (1999) An experimental study of the impulse response of a vibro-impacting cantilever beam. J SOUND VIB , 228 (2) 243 - 264.

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Abstract

The dynamics of a vibro-impacting cantilever beam experiment using an impact load cell is considered. The signal recorded from the cell produces spike train-type data. The issues related to the analysis of such data are discussed; particularly the sampling rate and threshold values. For vibro-impact motion of the beam, the duration of impacts is investigated by using a time of contact measure. The implications are discussed for vibro-impact systems mathematically modelled by using instantaneous impact assumptions (coefficient of restitution). Using the load cell to measure impact forces for the beam system is also considered. Then a delay reconstruction of the dynamics of the system by using interspike intervals is considered. It is demonstrated how this process is effected by the influence of noise and the data-acquision process using numerical simulations of the experimental data. It is shown how simple periodic motions can be identified by using a probability density approach and possible future research is highlighted. (C) 1999 Academic Press.

Type:Article
Title:An experimental study of the impulse response of a vibro-impacting cantilever beam
Keywords:DYNAMICS, OSCILLATOR, SYSTEMS
UCL classification:UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Mathematics

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