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Kollmer JE, Shreve T, Claussen J, Gerth S, Salamon M, Uhlmann N, Schröter M, Pöschel T. Migrating Shear Bands in Shaken Granular Matter. PHYSICAL REVIEW LETTERS 2020; 125:048001. [PMID: 32794800 DOI: 10.1103/physrevlett.125.048001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/18/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
When dense granular matter is sheared, the strain is often localized in shear bands. After some initial transient these shear bands become stationary. Here, we introduce a setup that periodically creates horizontally aligned shear bands which then migrate upward through the sample. Using x-ray radiography we demonstrate that this effect is caused by dilatancy, the reduction in volume fraction occurring in sheared dense granular media. Further on, we argue that these migrating shear bands are responsible for the previously reported periodic inflating and collapsing of the material.
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Affiliation(s)
- Jonathan E Kollmer
- Institute for Multiscale Simulation of Particulate Systems, Cauerstraße 3, 91058 Erlangen, Germany
- Department of Physics, 2401 Stinson Drive, North Carolina State University, Raleigh, North Carolina 27695, USA
- Experimentelle Astrophysik, Universitt Duisburg-Essen, Lotharstraße 1-21, 47057 Duisburg, Germany
| | - Tara Shreve
- Institute for Multiscale Simulation of Particulate Systems, Cauerstraße 3, 91058 Erlangen, Germany
- Université de Paris, Institut de physique du globe de Paris, CNRS, F-75005 Paris, France
| | - Joelle Claussen
- Fraunhofer-Entwicklungszentrum Röntgentechnik, Flugplatzstraße 75, 90768 Fürth, Germany
| | - Stefan Gerth
- Fraunhofer-Entwicklungszentrum Röntgentechnik, Flugplatzstraße 75, 90768 Fürth, Germany
| | - Michael Salamon
- Fraunhofer-Entwicklungszentrum Röntgentechnik, Flugplatzstraße 75, 90768 Fürth, Germany
| | - Norman Uhlmann
- Fraunhofer-Entwicklungszentrum Röntgentechnik, Flugplatzstraße 75, 90768 Fürth, Germany
| | - Matthias Schröter
- Institute for Multiscale Simulation of Particulate Systems, Cauerstraße 3, 91058 Erlangen, Germany
- Max Planck Institute for Dynamics and Self-Organization, 37077 Göttingen, Germany
| | - Thorsten Pöschel
- Institute for Multiscale Simulation of Particulate Systems, Cauerstraße 3, 91058 Erlangen, Germany
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Amon A, Born P, Daniels KE, Dijksman JA, Huang K, Parker D, Schröter M, Stannarius R, Wierschem A. Preface: Focus on imaging methods in granular physics. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2017; 88:051701. [PMID: 28571403 DOI: 10.1063/1.4983052] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Affiliation(s)
- Axelle Amon
- Institut de Physique de Rennes, UMR UR1-CNRS 6251, Université de Rennes 1, 35042 Rennes, France
| | - Philip Born
- Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt, 51170 Cologne, Germany
| | - Karen E Daniels
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Joshua A Dijksman
- Physical Chemistry and Soft Matter, Wageningen University and Research, Wageningen, The Netherlands
| | - Kai Huang
- Experimentalphysik V, Universität Bayreuth, 95440 Bayreuth, Germany
| | - David Parker
- School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Matthias Schröter
- Institute for Multiscale Simulation, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91052 Erlangen, Germany
| | - Ralf Stannarius
- Institut für Experimentelle Physik, Otto-von-Guericke-Universität, 39106 Magdeburg, Germany
| | - Andreas Wierschem
- Institute of Fluid Mechanics, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91058 Erlangen, Germany
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Feeney A, Sikaneta S, Harkness P, Lucas M. Ultrasonic compaction of granular geological materials. ULTRASONICS 2017; 76:136-144. [PMID: 28088705 DOI: 10.1016/j.ultras.2017.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 11/16/2016] [Accepted: 01/04/2017] [Indexed: 06/06/2023]
Abstract
It has been shown that the compaction of granular materials for applications such as pharmaceutical tableting and plastic moulding can be enhanced by ultrasonic vibration of the compaction die. Ultrasonic vibrations can reduce the compaction pressure and increase particle fusion, leading to higher strength products. In this paper, the potential benefits of ultrasonics in the compaction of geological granular materials in downhole applications are explored, to gain insight into the effects of ultrasonic vibrations on compaction of different materials commonly encountered in sub-sea drilling. Ultrasonic vibrations are applied, using a resonant 20kHz compactor, to the compaction of loose sand and drill waste cuttings derived from oolitic limestone, clean quartz sandstone, and slate-phyllite. For each material, a higher strain for a given compaction pressure was achieved, with higher sample density compared to that in the case of an absence of ultrasonics. The relationships between the operational parameters of ultrasonic vibration amplitude and true strain rate are explored and shown to be dependent on the physical characteristics of the compacting materials.
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Affiliation(s)
- Andrew Feeney
- School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | | | - Patrick Harkness
- School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Margaret Lucas
- School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK.
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Rondet E, Delalonde M, Chuetor S, Ruiz T. Modeling of granular material's packing: Equivalence between vibrated solicitations and consolidation. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2016.12.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Nadler S, Bonnefoy O, Chaix JM, Thomas G, Gelet JL. Parametric study of horizontally vibrated grain packings: comparison between Discrete Element Method and experimental results. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2011; 34:66. [PMID: 21744301 DOI: 10.1140/epje/i2011-11066-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2010] [Revised: 03/31/2011] [Accepted: 06/21/2011] [Indexed: 05/31/2023]
Abstract
Numerical and experimental studies have been undertaken to analyze three parameters controlling the compaction of granular media submitted to sinusoidal horizontal vibrations. We have characterized the influence of the dimensionless acceleration Γ, the geometry of the container and the friction coefficients on the grain velocities and on the packing densities. Above a critical acceleration Γ, the velocities increases with Γ. For low values of Γ, the surface layers are compacted, whereas the bottom layers remain at their initial density. For high values of Γ, the bottom layers get compacted, the surface layers are fluidized so that the bulk dynamic and relaxed densities decreased. In the same way, the effect of the dimensions of the container and of the friction coefficients on the packing properties has been studied for given heights of sand, acceleration and frequency. It has been shown that the influence of the two last parameters is similar to that of acceleration. The numerical results given by the Discrete Element Method appear to be in good agreement with experimental results.
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Affiliation(s)
- S Nadler
- Ecole Nationale Supérieure des Mines de Saint Etienne, Centre SPIN, LPMG FRE 3312, 158 Cours Fauriel, 42023 Saint-Etienne Cedex 2, France.
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