Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/17626
Title: Modelling Influence of Poisson's Contraction on Squeeze Film Levitation of Planar Objects
Authors: Almurshedi, A
Atherton, M
Mares, C
Stolarski, T
Issue Date: 2019
Publisher: AIP Publishing
Citation: Journal of Applied Physics
Abstract: Poisson's contraction effect is utilised to generate squeeze film levitation and is investigated through a computer model and validated experimentally. A finite element model (ANSYS) is verified by the experimental testing of five different plate designs. Each plate is subjected to uniaxial plain stress by an arrangement of two hard piezoelectric actuators bounded to the bottom of the plate and driven with DC and AC voltages. It is observed that a pulsating dimple or crest shape along the longitudinal axis in the central area of the plate is created due to Poisson's contraction, generating a squeeze-film between the plate and a levitated object. The separation distance between the floating planar object and the plate is analysed using computational fluid dynamics (ANSYS) and experimentally measured by a laser sensor. A good agreement has been found between model predictions and experimental results.
URI: http://bura.brunel.ac.uk/handle/2438/17626
DOI: https://doi.org/10.1063/1.5052051
ISSN: 0021-8979
1089-7550
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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