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Issue 18, 2011
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Reflection and exclusion of shear zones in inhomogeneous granular materials

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Abstract

Shear localization in granular materials is studied experimentally and numerically. The system consists of two material layers with different effective frictions. The presence of the material interface leads to a special type of “total internal reflection” of the shear zone. In a wide range of configurations the reflection is characterized by a fixed angle which is analogous to the critical angle of refraction in optics. The zone leaves and reenters the high friction region at this critical angle and in between it stays near the interface in the low friction region. The formalism describing the geometry of the shear zones and that of refracted and reflected light beams is very similar. For the internal visualization of shear localization two independent experimental techniques were used (i) excavation and (ii) magnetic resonance imaging.

Graphical abstract: Reflection and exclusion of shear zones in inhomogeneous granular materials

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Publication details

The article was received on 26 Apr 2011, accepted on 17 Jun 2011 and first published on 05 Aug 2011


Article type: Paper
DOI: 10.1039/C1SM05762F
Citation: Soft Matter, 2011,7, 8330-8336

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    Reflection and exclusion of shear zones in inhomogeneous granular materials

    T. Börzsönyi, T. Unger, B. Szabó, S. Wegner, F. Angenstein and R. Stannarius, Soft Matter, 2011, 7, 8330
    DOI: 10.1039/C1SM05762F

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