Determination of the viscous resistance of a plane damper with a newtonian fluid using the equation similarity with the shaft torsion problem

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This paper describes the similarity between the Reynolds equation for a thin viscous layer of liquid in a plane damper and the commonly known equations of membrane deflections and equations of free torsion of a shaft. Based on the similarity of equations, a viscous resistance coefficient of a plane damper in the normal direction was determined. An approximate formula of the viscous friction coefficient in tangential direction was derived using the Couette flow assumption. The paper shows that acquiring the same viscous friction coefficients in the normal and tangential direction for a plane damper with a thin lubricating layer is not possible.