Book chapter
Micromechanical constitutive modelling of granular media: Evolution and loss of contact in particle clusters
Mathematics and Mechanics of Granular Materials: Mathematics and Mechanics of Granular Materials, pp.93-106
Springer Netherlands
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 with strain-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) - The University of MelbourneA. Tordesillas (Author/Creator) - The University of Melbourne
- Contributors
- J.M. Hill (Editor)A.P.S. Selvadurai (Editor)
- Publication Details
- Mathematics and Mechanics of Granular Materials: Mathematics and Mechanics of Granular Materials, pp.93-106
- Publisher
- Springer Netherlands
- Identifiers
- 991005542646207891
- Copyright
- 2005 Springer
- Murdoch Affiliation
- Murdoch University
- Language
- English
- Resource Type
- Book chapter
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