Force fluctuations in sheared granular disks

Mingbo YUAN; Qicheng SUN; Feng JIN

doi:10.1007/s11709-013-0189-7

PDF(387 KB)

Front. Struct. Civ. Eng. ›› 2013, Vol. 7 ›› Issue (1) : 46-49. DOI: 10.1007/s11709-013-0189-7

RESEARCH ARTICLE

Force fluctuations in sheared granular disks

Author information +

History +

Abstract

The internal structure established within granular materials, often observed as force chains, is dominant in controlling bulk mechanical properties. We designed a two-dimensional Hele-Shaw cell to contain photoelastic disks, and two servos were used on the top and right boundaries individually. We experimentally monitored the fluctuations in force on the top plate while slowing the shearing of the well-confined disks and keeping the right boundary at a contact-confined force of 0.2 kN. The particle rearrangements were found to correspond to bulk force drops and were observed in a localized zone with a length of approximately 5 particle diameters. These results help reveal the structure and mechanics of granular materials, and further investigations are ongoing.

Keywords

granular matter / force chain / stick and slip

Cite this article

EndNote

Ris (Procite)

Bibtex

Download citation ▾

Mingbo YUAN, Qicheng SUN, Feng JIN. Force fluctuations in sheared granular disks. Front Struc Civil Eng, 2013, 7(1): 46‒49 https://doi.org/10.1007/s11709-013-0189-7

References

Publishing order | Descend order by publishing year | Descend order by cited within

[1]	Bi Z, Sun Q, Jin F, Zhang M. Numerical study on energy transformation in granular matter under biaxial compression. Granular Matter, 2011, 13(4): 503–510 CrossRef Google scholar

[2]	Pica Ciamarra M, Lippiello E, de Arcangelis L, Godano C. Statistics of slipping event sizes in granular seismic fault models. Europhysics Letters, 2011, 95(5): 54002 CrossRef Google scholar

[3]	Sun Q, Song S, Jin F, Bi Z. Elastic energy and relaxation in triaxial compressions. Granular Matter, 2011, 13(6): 743–750 CrossRef Google scholar

[4]	Manning M L, Liu A J. Vibrational modes identify soft spots in a sheared disordered packing. Physical Review Letters, 2011, 107(10): 108302 CrossRef Google scholar

[5]	Sun Q, Song S, Jin F, Jiang Y. Entropy productions in granular materials. Theoretical and Applied Mechanics Letters, 2012, 2(2): 021002 CrossRef Google scholar

[6]	Liu J, Sun Q, Jin F. Visualization of force networks in 2D dense granular materials. Frontiers of Architecture and Civil Engineering in China, 2010, 4(1): 109–115 CrossRef Google scholar

Acknowledgements:

This work was supported by the domestic visiting scholar project for outstanding teachers in colleges of Shandong Province and the National Natural Science Foundation of China (Grant No. 51239006).