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ホーム > Séminaires > Archives séminaires > Séminaires 2013 > Séminaire MSC jeudi 14 février 2013 à 16h00. Jay Finneberg (The Hebrew University of Jerusalem) : "How Things Slide : Rapid Dynamics at the Onset of Friction".

Séminaire MSC jeudi 14 février 2013 à 16h00. Jay Finneberg (The Hebrew University of Jerusalem) : "How Things Slide : Rapid Dynamics at the Onset of Friction"

Sauf mention contraire, les séminaires et les soutenances se déroulent à 11h30 en salle 454A du bâtiment Condorcet.

Attention horaire exceptionnel jeudi 14 février à 16h00 en salle 454 A

Jay Finneberg

The Racah Institute of Physics, The Hebrew University of Jerusalem,

Givat Ram, Jerusalem Israel

How Things Slide : Rapid Dynamics at the Onset of Friction

The dynamics of how two rough frictional interfaces detach is a fundamental question in fields ranging from material science to geophysics. On the one hand, the onset of frictional motion is thought to be characterized by the static friction coefficient that couples two materials. For hundreds of years, this has been considered to be a material constant. On the other hand, the same processes that give rise to the onset of frictional motion also cause earthquakes, when tectonic plates locked together by friction start to slip. We describe new experiments that examine how rapid crack-like processes that fracture a frictional interface cause the onset of macroscopic motion that we know as frictional sliding. Results of this study are surprising. We both demonstrate that a number of different types of earthquakes exist and that the “static friction coefficient” is not a material constant at all, but is intimately related to the details of how forces are applied to a system.

Contact : Équipe séminaires / Seminar team - Published on / Publié le 21 décembre 2012

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