Speaker: Jason Marshal
Affiliation: California Institute of Technology

UCLA Civil & Environmental Engineering Department


C&EE 200 Section 1 Seminar

Structural, Geotechnical and Civil Engineering Materials

Discrete Materials: Understanding and modeling physics from atoms to sand

Jason Marshall, Ph.D.

Senior Postdoctoral Scholar, California Institute of Technology


Discrete objects range from the small scale in atomic systems to the large scale with celestial bodies.  The interactions between these materials can be approximated with the same fundamental equations from Newtonian mechanics to classic continuum relations.  However, even the simplest systems can have complicated physics and behave in unexpected manners.  In this talk, computational and experimental work will be shown highlighting fundamental material interactions in these systems.  Topics will include (i) computational methods for modeling long-range electrostatic interactions in atomistic systems, (ii) experimental investigations of the dependence of sand friction angles on gravity, and (iii) thermal conductivity estimates for Martian regoliths in support of NASA’s InSight mission. In summary, this talk will bridge length scales (atomic-meso) and modeling paradigms (discrete-continuum) to investigate some of the simplest, but most interesting systems known to man.

Where: A2 Haines Hall

When: 4:00 – 5:00 PM on Tuesday, March 13, 2018

 Dr. Jason Marshall is a Senior Postdoctoral Scholar in the Mechanical and Civil Engineering Department at the California Institute of Technology and has been there since January 2015. He received his B.S. in Civil Engineering from California Polytechnic State University – San Luis Obispo in 2008 and his M.S. and Ph.D. in Civil Engineering from Carnegie Mellon University in 2011 and 2014. His research interests are in computational mechanics with an emphasis on granular materials.  Specifically, he is interested in utilizing and developing computational methods and techniques for characterizing and understanding multi-physics problems at the grain scale.  His interests also include developing and conducting experimental investigations to inform and guide computational techniques.

Date(s) - Mar 13, 2018
4:00 pm - 5:00 pm


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