Author(s)

Walter Sextro

Abstract

In the model presented the non-Hertzian contact planes are discretised. For each contact element the developed three-dimensional Point-Contact-Model is used to calculate the corresponding tangential and normal forces. The Point- Contact-Model includes the roughness, the normal pressure distribution, the stiffness in normal and tangential direction and dry friction. Due to roughness of the contact planes the contact stiffnesses are nonlinear dependent on the relative normal displacements. Effects of microslip due to roughness are investigated. An experiment with two non-Hertzian contacts is used to verify the developed model. The comparison between measured and calculated frequency response functions for three-dimensional vibrations of the elastic structures show a good agreeme

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