Special Issue "Granular Materials"
A special issue of Materials (ISSN 1996-1944).
Deadline for manuscript submissions: closed (30 June 2017)
Prof. Dr. Sinisa Dj. Mesarovic
Almost two and a half centuries after Coulomb’s first investigations, granular materials still elude full understanding. The disorder in a granular assembly with apparent partial ordering (force chains, fabric), variety of particle shapes and size statistics, as well as the highly constrained kinematics of densely packed particles defy our attempts to formulate a predictive theory, capable of describing dilatancy, shear localization, flow patterns and transition from solid-like (jammed) state to fluid-like flow. Recent advances in experimental techniques and computing power enable more accurate observations and analysis of the particle-scale phenomena and their effects on the collective behaviour.
The problems in granular materials have engaged multiple scientific communities: Engineers, physicists and mathematicians. The Special Issue on “Granular Materials” is intended as a multi-disciplinary forum to present the current state-of-the-art and recent advances, as well as to suggest the future directions. Experimental, computational and theoretical contributions are invited. Of particular interest are the contributions, which provide understanding of micro-scale mechanisms and/or enable their description within meso-scale models.
The list of keywords given below provides brief summary of the open issues. The list is illustrative and the contributions are not limited to these topics.
Prof. Dr. Sinisa Dj. Mesarovic
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access monthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- Dilatancy and Critical state
- Force chains and Anisotropy
- Particle kinematics and Collective behaviour
- Jamming and flow of granular assemblies
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Evidence of metastable attractors in dense granular materials
Author: Sebastian Pucilowski, Antoinette Tordesillas, Gary Froyland
Abstract: We study the metastable dynamics of dense granular systems deforming in the presence of persistent shear bands in two- and three-dimensions from the perspective of its conformational landscape: the state space formed by all observed grain conformations, as defined by the local mesoscale topology of grains relative to their first ring of contacting neighbours. Peaks in the distributions of grain conformations reveal preferred self-assembled mesostructures. The conformational landscape is partitioned into metastable almost-invariant regions or sets, such that grain rearrangements from one conformation to another in the same almost-invariant set occurs with high probability, and rearrangements between almost-invariant sets are unlikely. The great majority of conformational transitions are identity transitions: grains rearrange and exchange contacts to preserve those topological properties with the greatest influence on cluster stability, namely, the number of contacts and 3-cycles. Dynamical transition barriers are observed in which non-identity conformational transitions are favoured or impeded. Force chains show a clear preference for almost-invariant sets with the most number of accessible and highly connected conformations, with rearrangements preserving structural stability. These metastable regions make ideal breeding grounds for future force chains. When force chains become overloaded and fail by buckling in the shear zone, the energy released enables member grains to overcome the dynamical barriers that seperate metastable regions and enable a transition to another in the conformational landscape.
These buckling force chain grains, compared to grains locked in stable force chains, show preference for not only non-identity transitions within each metastable region but also transitions between metastable regions.
Title: Basic features of the quasi-static mechanical behavior of model granular materials studied by discrete numerical simulations.
Authors: Jean-Noël Roux, Chloë Dequeker