Effects of Nonaffinity on Jammed Materials
Abstract
If an amorphous solid such as a jammed particle system is subjected to an external stress, the induced displacements of internal particles are necessarily nonaffine. Using numerical minimization procedures, we investigate the response to stress of a disordered packing of purely repulsive spheres. We calculate the correlations of the nonaffine part of the displacements of individual particles just above the jamming threshold (point J). We find that these correlations are consistent with those predicted by a continuum theory and verified numerically in simple model random elastic systems.
C.S. O'Hern, L.E. Sibert, A.J. Liu, and S.R. Nagel, Phys. Rev. E 68, 011306 (2003). B. DiDonna and T.C. Lubensky, Phys.Rev. E (to be published).- Publication:
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APS March Meeting Abstracts
- Pub Date:
- March 2006
- Bibcode:
- 2006APS..MAR.H8005V