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Numerical dem analyses under simple shear conditions : the steady state for granular matters under large strain rates
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Di Prisco, Claudio, Rinaldi, G. and Utili, Stefano (2013) Numerical dem analyses under simple shear conditions : the steady state for granular matters under large strain rates. In: III International Conference on Particle-based Methods – Fundamentals and Applications PARTICLES 2013, Stuttgart, Germany, 18-20 Sep 2013. Published in: Proceedings of the 3rd International Conference on Particle-based Methods Fundamentals and Applications, Particles pp. 764-774.
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Official URL: http://congress.cimne.com/particles2013/frontal/de...
Abstract
The comprehension of the mechanical behaviour of granular materials under a wide
range of strain rates is nowadays considered to be essential for the understanding of the
mechanisms of both inception and evolution of large and catastrophic landslides. In this
perspective, the authors have decided to perform a large series of DEM numerical analyses on
an ideal granular specimen loaded under simple shear conditions. In fact, this is judged to be
the unique suitable numerical tool to be used for mechanically interpreting the transition of
this class of materials from the solid-like to the fluid-like phase: the first one being dominated
by long lasting chains of forces within the so-called solid-skeleton, the second one being
governed by semi-instantaneous impacts among particles characterized by a generalized state
of agitation.
In this paper, the steady state is the main focus of investigation. The main fundamental issues
explored are: (i) the size of the representative elementary volume, (ii) the perturbation
necessary for the steady state to be reached. In fact, according to the authors, all these
information are quite useful for conceiving new constitutive relationships, based on the
classical continuum mechanics and capable of describing the previously cited phase
transition
Item Type: | Conference Item (Paper) | ||||
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||
Journal or Publication Title: | Proceedings of the 3rd International Conference on Particle-based Methods Fundamentals and Applications, Particles | ||||
Editor: | Bischoff, M. and Oñate, E. and Owen, D. R. J. and Ramm, E. and Wriggers, P. | ||||
Official Date: | 2013 | ||||
Dates: |
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Page Range: | pp. 764-774 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Open Access (Creative Commons) | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | III International Conference on Particle-based Methods – Fundamentals and Applications PARTICLES 2013 | ||||
Type of Event: | Conference | ||||
Location of Event: | Stuttgart, Germany | ||||
Date(s) of Event: | 18-20 Sep 2013 |
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