Effects of grain shape on packing and dilatancy of sheared granular materials.

@article{Wegner2014EffectsOG,
  title={Effects of grain shape on packing and dilatancy of sheared granular materials.},
  author={Sandra K. Wegner and Ralf Stannarius and Axel Boese and Georg Rose and Bal{\'a}zs Szab{\'o} and Ell{\'a}k Somfai and Tam{\'a}s B{\"o}rzs{\"o}nyi},
  journal={Soft matter},
  year={2014},
  volume={10 28},
  pages={
          5157-67
        }
}
A granular material exposed to shear shows a variety of unique phenomena: Reynolds dilatancy, positional order and orientational order effects may compete in the shear zone. We study granular packing consisting of macroscopic prolate, oblate and spherical grains and compare their behaviour. X-ray tomography is used to determine the particle positions and orientations in a cylindrical split bottom shear cell. Packing densities and the arrangements of individual particles in the shear zone are… CONTINUE READING