  We report a numerical study accounting for the electrical response of a
slipping multi-contact interface and of their variations with the sliding
speed. We characterize these variations by analyzing the voltage noise across
the contact from a mechanical model based on the roughness interaction. Our
model focuses only on the mechanical aspects of the slipping interface and
explores its electrical consequences (electrical noise) versus the sliding
speed. Numerical results are compared with experimental data of the resistance
noise versus sliding speed: we find a good agreement between theory and
experiments, which opens ways to the development of the electro-mechanic
devices monitoring.
