Levich Institute Seminar Announcement, 04/30/2019

Tuesday, 04/30/2019
2:00 PM
Steinman Hall, Room #312
(Chemical Engineering Conference Room)

Dr. Behrooz (Bruce) Ferdowsi

Princeton University, Department of Geosciences

“How Much of Rate- and State-Dependent Frictional Behavior of Rocks Can Be Explained by Granular Friction?”

ABSTRACT

Earth materials including rocks and sediment show a frictional response that is rate-dependent, contains a memory of loading history, and demonstrates healing with shear and time. The commonly accepted framework among geophysicists for modeling this frictional behavior is known as “Rate and State-dependent Friction”, or RSF. Constitutive laws for RSF friction are largely empirical, and none proposed thus far adequately describes the full range of laboratory observations. In this talk, I will discuss the extent to which laboratory observations of rock friction in different slip histories that are thought to be relevant to plate tectonics can be modeled by granular friction and be explained as a granular phenomenon.

BRIEF ACADEMIC/EMPLOYMENT HISTORY:

M.Sc. (2010), Geomechanics, Tehran Polytechnic, Iran
Ph.D. (2014), Civil, Environmental and Geomatic Engineering, ETH Zurich, Switzerland
Postdoctoral researcher (2015-2017), Earth and Environmental Sciences, University of Pennsylvania, USA
Harry H. Hess Postdoctoral Fellow (2017-present), Department of Geosciences, Princeton University, USA

MOST RECENT RESEARCH INTERESTS:

I am currently working on several outstanding problems in Earth and planetary sciences that can benefit from advances in soft condensed matter physics, granular physics and complex fluids rheology. My most recent interests include rock friction and earthquake physics, sediment transport and planetary surface processes, processes of orogeny and plate tectonics.