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Shear localisation during yielding of amorphous materials

Thursday, March 30, 2023 11am

Image of Shear localisation during yielding of amorphous materials

About this Event

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Amorphous materials include soft solids such as colloids, foams, emulsions, granular materials, and gels, as well as harder materials such as molecular and metallic glasses. In contrast to crystalline solids, the internal arrangement of their constituent microstructures (emulsion droplets, sand grains, etc.) lacks order. Understanding the rheological properties of these materials thus poses a major challenge. Typically, they behave elastically at low loads but yield plastically at larger loads. This talk will summarise recent progress in understanding the yielding transition between an initially solid-like state and a finally fluidised one, as a function of time since the application of an imposed strain or load, with a particular focus on the phenomenon of strain localisation during this dynamical process of yielding.

Event Details

Event Type

Colloquia / Seminar / Lecture

Academics

Applied Mathematics

Series

Widely Applied Mathematics Seminars

Audience

Alumni Faculty General Public Graduate Students Researchers / Postdocs Staff Undergraduate Students Harvard Community SEAS Community

Web Page Listing

Academic Areas Applied Mathematics

Speaker 1

Suzanne Fielding, Professor of physics, Durham University

Speaker Bio

Suzanne Fielding obtained her first degree in physics from Oxford University in 1997 and her PhD from Edinburgh University in 2000. Following postdoctoral research at Leeds University she spent four years lecturing in applied mathematics at Manchester University, before moving to the Department of Physics here at Durham University in 2009. In 2010 she received the Arthur B. Metzner award of the Society of Rheology.

Financial support for her research has been provided by an EPSRC Postdoctoral Research Fellowship in Theoretical Physics, an EPSRC Advanced Research Fellowship, a European Research Council (ERC) Consolidator Grant, an ERC Advanced Grant, the EPSRC funded SOFI-CDT, and direct from industrial companies. Her research interests lie in the theoretical and computational statistical mechanics and rheology (deformation and flow properties) of soft materials and complex fluids such as colloids, emulsions, foams, microgels, surfactants, liquid crystals, and polymers, and their biological counterparts such as bioactive fluids and biological tissues.

Host

L. Mahadevan

Contact

Lucas Amoudruz

Email

amlucas@seas.harvard.edu
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