Author(s)

J. Jager

Abstract

A reduced elastic friction model for complicated surfaces J . Jager, Lauterbach Verfahrenstechnik, Germany Abstract Some properties of a reduced friction model for general elastic bodies in contact are outlined and compared with numerical examples for difficult contact areas, which can not be solved analytically. Under consideration of the necessary assumptions by Jager (2000), the tangential friction problem and all associated inequalities can be reduced to the normal contact problem. The tangential solution results as the difference of the full slip traction for actual contact and a smaller contact area, which represents the stick area (or multiple areas). The local traction in the slip area opposes the relative motion in the same way as the normal relative approach opposes the contact pressure, as required by Coulomb's slip inequality. The stick inequality for the traction is identical with the contact condition of positive pressure. Several applications for thin layers, half-spaces and impa

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