Tribological origin of squeal noise in lubricated elastomer/glass contact

Anton Rusanov (1) , Denis Mazuyer (1) , Joël Perret Liaudet (1) , Alain Le Bot (1) , Matthieu Guibert (1) , Julian Le Rouzic

1 LTDS - Laboratoire de Tribologie et Dynamique des Systèmes

This study investigates the tribological conditions in water lubricated elastomer/glass contact which lead to self-excited vibrations and squealing noises. Friction tests were performed using a specific experimental device “Lug”. In the experiments, friction forces and vibrational velocity have been properly measured for a wide range of relative velocities. The resulting friction coefficient as a function of sliding velocity fits well a Stribeck's law. Instabilities appear during the transition between static and hydrodynamic regimes. Actually the negative slope of the friction force as a function of relative velocity in the mixed lubrication regime enables the system to become unstable. Knowing the damping ratio of the oscillator, it is then possible to predict from the friction force measurements the range of velocities that lead to instabilities.

Mots clés: squeal noise; elastomer; vibration

Domaines: Acoustique [physics.class-ph]

Anton Rusanov, Denis Mazuyer, Joël Perret Liaudet, Alain Le Bot, Matthieu Guibert, et al.. Tribological origin of squeal noise in lubricated elastomer/glass contact. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00811118⟩