Rotation and Reshaping of Self-gravitating Aggregates

Details Rotation and Reshaping of Self-gravitating Aggregates Rotation and Reshaping of Self-gravitating Aggregates

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..301s&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.301

Physics

Scientific paper

Using a Soft-Sphere DEM code we simulate the reshaping and disruption of a self-gravitating 3D granular aggregate by increasing its spin rate. During the process, we monitor the evolution of the internal stresses in the aggregate to find its yield stress using the Maximum Stress, Von Mises and Drucker-Prager yield criteria. In the simulations we either increase the number of particles or their density to increase the total mass of the aggregate and find an increment in the yield stress. In addition, once a reshaping spin rate (density dependent) has been reached, its further increase causes further reshape (ultimately fission) and a decrease in the spin rate itself.

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