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METHOD:PUBLISH
BEGIN:VEVENT
DTSTAMP:20260730T022341Z
LAST-MODIFIED:20121116T203436Z
DTSTART:20090324T193000Z
DTEND:20090324T203000Z
UID:event372@bu.edu
URL:http://physics.bu.edu/internal/events/show/372
SUMMARY:Fluctuations\, Response\, Entropy and "Temperature" in Granular Pac
	kings
DESCRIPTION:Featuring Bulbul Chakraborty\, Brandeis University\nHosted by: 
	William Klein\nPoster: http://physics.bu.edu/internal//posters/2009_Spring/
	06_Chakraborty.pdf\n\nPart of the Physics Department Colloquia Series.\n\nA
	bstract:\nUnderstanding jamming\, the transition from a flowing fluid state
	 to a disordered solid state\, in granular systems is important from a tech
	nological\, environmental\, and basic science perspective. Jamming of grain
	s in silos cause catastrophic failures. Avalanches are examples of unjammin
	g\, which we need to understand to prevent and control. The phenomenon pose
	s fundamental challenges in basic science because there is no known framewo
	rk leading from the microscopic\, grain level interactions to the macroscop
	ic properties that reflect collective behavior. Jamming in granular matter 
	is intimately related to stress propagation\, and the nature of jamming wil
	l depend on whether the material is under shear or isotropic compression. I
	t will also depend on whether there is sustained motion with the grains hav
	ing a finite kinetic energy or if the system is at rest and being slowly de
	formed.    In this talk\, I will present a statistical mechanics framework 
	that bridges the microscopic with the macroscopic\, and present results for
	 stress fluctuations and force chains in granular packings.
LOCATION: \, \, 
STATUS:CONFIRMED
CLASS:PUBLIC
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