Note: A kinematic shaker system for high amplitude, low frequency vibration testing

Anand Swaminathan, Matthew E. Poese, Robert W.M. Smith, Steven L. Garrett

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Abstract

This note describes a shaker system capable of high peak-velocity, large amplitude, low frequency, near-sinusoidal excitation that has been constructed and employed in experiments on the inhibition of Rayleigh-Bénard convection using acceleration modulation. The production of high peak-velocity vibration is of interest in parametric excitation problems of this type and reaches beyond the capabilities of standard electromagnetic shakers. The shaker system described employs a kinematic linkage to two counter-rotating flywheels, driven by a variable-speed electrical motor, producing peak-to-peak displacements of 15.24 cm to a platform mounted on two guide rails. In operation, this shaker has been demonstrated to produce peak speeds of up to 3.7 m/s without failure.

Original languageEnglish (US)
Article number116102
JournalReview of Scientific Instruments
Volume86
Issue number11
DOIs
StatePublished - Nov 1 2015

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All Science Journal Classification (ASJC) codes

  • Instrumentation

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