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Pressure distribution in a curvilinear bearing lubricated by viscoelastic fluid of Rivlin-Ericksen

100%

Walicka A. , Walicki E.

Applied Mechanics and Engineering

1999

tom Vol. 4, no spec.

73-80

A flow of a viscoelastic fluid of Rivlin-Ericksen in a clearance of a thrust curvilinear bearing was considered. The equations of motion in thin layers presented in the orthogonal curvilinear coordinate system were solved by a method of averaged inertia. As a result the formula for pressure distribution was obtained. Examples of a flow between two disks and two concentric spherical surfaces were given.

Pressure distribution in the hydrostatic thrust bearing lubricated by a generalized second grade lubricant of a power-law type

86%

Walicka A.

International Journal of Applied Mechanics and Engineering

2011

tom Vol. 16, no 4

1225-1235

The flow of a generalized second grade lubricant of a power-law type in a clearance of the thrust curvilinear bearing is considered. To solve this problem the boundary layer equations expressed for axially symmetric case in a curvilinear orthogonal coordinate system connected with one of the bearing surfaces by used. The method of averaging inertia and viscoplastic terms is used to find the solution of the boundary layer equations. As a result the formula for pressure distribution is obtained. Examples the lubricant flow in step and spherical hydrostatic bearings are given.