Isotropic compression of cohesive-frictional particles with rolling resistance

Luding, S. (2010) Isotropic compression of cohesive-frictional particles with rolling resistance. In: 7th European Conference on Numerical Methods in Geotechnical Engineering, NUMGE 2010, June 2-4, 2010, Trondheim, Norway.

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Abstract:	Cohesive-frictional and rough powders are the subject of this study. The behavior under isotropic compression is examined for different material properties involving Coulomb friction, rolling-resistance and contact-adhesion. Under isotropic compression, the density continuously increases according to Bauers exponential law, see Ref. (Bauer 1999). However, at a certain pressure/density, the behavior qualitatively changes and the system enters a second branch – again acoording to Bauers law, but with different parameters. In conclusion, the material behavior changes between two states that are both, separately, described by a simple exponential function. The phenomenology and origin of the transition between the two states is discussed.
Item Type:	Conference or Workshop Item
Copyright:	© 2010 CRC Press
Faculty:	Engineering Technology (CTW)
Research Group:	Engineering Fluid Dynamics (EFD)
Link to this item:	http://purl.utwente.nl/publications/80367
Official URL:	http://dx.doi.org/10.1201/b10551-40
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