期刊
REVIEW OF SCIENTIFIC INSTRUMENTS
卷 86, 期 11, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4935148
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资金
- Office of Naval Research
- Penn State Applied Research Laboratory Walker Graduate Assistantship
- Julian Schwinger Foundation for Physics Research
- U.S. Department of Energy ARPA-E
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-Benard 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. (C) 2015 AIP Publishing LLC.
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