Determination of the friction coefficient as a function of sliding speed and normal pressure for steel C45 and steel 40HM

• A method of determining the coefficient of friction as a function of rubbing speed and normal pressure for different friction pairs of materials used in friction dampers was presented.
• An analytical relation describing the influence of rubbing speed and normal pressure on the friction coefficient for steel C45 and steel 40HM was derived.
• 3D numerical models were created on the basis of the analytical relation.
• Friction coefficient curves at pressure for steel C45 and 40HM, obtained using respectively analytical model and numerical model were compared.

This paper presents a method of determining the coefficient of friction as a function of sliding speed and normal pressure for different friction pairs of materials used in friction dampers. A schematic of the experimental setup is shown and the course of the experiment is described. An analytical relation describing the influence of sliding speed and normal pressure on the friction coefficient for C45 and 40HM steel was derived. Then on the basis of the analytical relation 3D numerical models were created. Computations using the Abaqus/Standard software package were performed.