Skip to main content

The oscillation behaviour of a sliding particle under dry friction in a vertical rotating drum is investigated theoretically. A differential equation is set up for general friction laws. For constant friction coefficients, the equation can be solved exactly. For velocity-dependent friction, it can be treated perturbation theoretically. The unperturbed system is solved and with the help of the averaging method, the perturbed system can then be examined for periodic movements. 

Different structures of the phase space are found for the different friction laws. A friction law given by Rabinowicz reproduces all important aspects of the experiment. Other friction laws are discussed.

Alexander Schinner
Klaus Kassner
André Betat
Ingo Rehberg
Frühjahrstagung der DPG
Deutsche Physikalische Gesellschaft
Münster, Germany

Please add some content in Animated Sidebar block region. For more information please refer to this tutorial page:

Add content in animated sidebar