Journal article
Micromechanical constitutive modelling of granular media: Evolution and loss of contact in particle clusters
Journal of Engineering Mathematics, Vol.52(1-3), pp.93-106
2005
Abstract
Micromechanical constitutive equations are developed which allow for the broad range of interparticle interactions observed in a real deforming granular assembly: microslip contact, gross slip contact, loss of contact and an evolution in these modes of contact as the deformation proceeds. This was accomplished through a synergetic use of contact laws, which account for interparticle resistance to both sliding and rolling, together withstrain-dependent anisotropies in contacts and the normal contact force. By applying the constitutive model to the bi-axial test it is demonstrated that the model can correctly predict the evolution of various anisotropies as well as the formation of a distinct shear band. Moreover, the predicted shear-band properties (e.g. thickness, prolonged localisation, void ratio) are an even better fit with experimental observations than were previously found by use of previously developed micromechanical models.
Details
- Title
- Micromechanical constitutive modelling of granular media: Evolution and loss of contact in particle clusters
- Authors/Creators
- B.S. Gardiner (Author/Creator)A. Tordesillas (Author/Creator)
- Publication Details
- Journal of Engineering Mathematics, Vol.52(1-3), pp.93-106
- Publisher
- Springer
- Identifiers
- 991005540255107891
- Copyright
- © 2005 Springer
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 7 Engineering & Materials Science
- 7.139 Energy & Fuels
- 7.139.524 Fluidization
- Web Of Science research areas
- Engineering, Multidisciplinary
- Mathematics, Interdisciplinary Applications
- ESI research areas
- Engineering