回転する多孔質ゴムと剛体面間に形成されたスクイズフィルムに関する研究(機械要素,潤滑,工作,生産管理など)

概要

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The theoretical and experimental study is carried out to investigate the squeeze film penomena between a cylindrical porous block and an impermeable rigid plate. The porous rubber block is rotated and oscillated sinusoidally in the direction perpendicular to its surface, whereas the rigid plate is stationary. The deformation of the porous rubber block is evaluated with an approximate method, in which the cylindrical rubber block is simplified to be a set of concentric rings and each ring is assumed to be deformed only axially and independently from the neighboring ones. The each ring can be replaced a three-element viscoelastic model. The theoretical result agrees approximately with the experimental result and both results show that a rotational motion slightly decreases the squeeze film pressure and force due to a centrifugal force mainly acting on the film. The effects of the permeability of the porous matrix, the velocity slip at the porous surface and the surface deformation of the porous matrix on the squeeze film characteristics are made clear by comparing the results for the squeeze film between the porous rubber surface and the impermeable rigid surface with those between a pair of impermeable rigid plates.
2008-01-25