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Dynamical behaviors of granular piles are systemically investigated by an experimental equipment and imaging and direct particle tracking during quasi-static avalanches and slow flow process. It is found that part of beads slides obliquely downward, meanwhile the other part of beads is almost fixed; layer-structure can be clearly observed, and it include flow-layers and static-layer. The flow-layers lie almost parallel to each other and the angles between the flow-layers and horizonal plane are approximately in the range 4050. Moreover, the slippage of the flow-layers from the static-layer begins to gradually increase linearly. In addition, the positions of initial flow-layer that has different volumes of granular piles tend to be fixed.
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Keywords:
- granular flow /
- avalanche /
- quasi-static /
- layers structure
[1] Sun Q C, Wang G Q 2009 An introduction to mechanics of granular material (Beijing: Science Press) p103 (in Chinese) [孙其诚, 王光谦 2009 颗粒物质力学导论 (北京: 科学出版社)第103页]
[2] Lu K Q, Liu J X 2006 An introduction to physics of soft matter (Beijing: Peking University Press) p645 (in Chinese) [陆坤权, 刘寄星 2006 软物质物理学导论 (北京: 北京大学出版社)第645页]
[3] Rao K K, Nott P R 2008 An introduction to granular flow (Cambridge: Cambridge University Press) p2
[4] Bak P, Tang C, Wiesenfeld K 1988 Phys. Rev. A 38 364
[5] Jaeger H M, Liu C, Nagel S R 1989 Phys. Rev. Lett. 62 40
[6] Staron L 2008 Phys. Rev. E 77 051304
[7] Artoni R, Santomaso A, Canu P 2011 Phys. Rev. E 83 051304
[8] Jop P, Forterre Y, Pouliquen O 2006 Nature 441 727
[9] Pont S C D, Fischer R, Gondret P, Perrin B, Rabaud M 2005 Phys. Rev. Lett. 94 048003
[10] Socie B A, Umbanhowar P, Lueptow R M, Jain N, Ottino J M 2005 Phys. Rev. E 71 031304
[11] Inagaki T S K S, Nakagawa N, Nasuno S 2001 Phys. Rev. Lett. 86 1757
[12] Lemieux P A, Durian D J 2000 Phys. Rev. Lett. 85 4273
[13] Mueth D M, Debregeas G F, Karczmar G S, Eng P J, Nagel S R, Jaeger H M 2000 Nature 406 385
[14] Fenistein D, Meent J W V D, Hecke M V 2004 Phys. Rev. Lett. 92 094301
[15] Aranson I S, Tsimring L S 2002 Phys. Rev. E 65 061303
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[1] Sun Q C, Wang G Q 2009 An introduction to mechanics of granular material (Beijing: Science Press) p103 (in Chinese) [孙其诚, 王光谦 2009 颗粒物质力学导论 (北京: 科学出版社)第103页]
[2] Lu K Q, Liu J X 2006 An introduction to physics of soft matter (Beijing: Peking University Press) p645 (in Chinese) [陆坤权, 刘寄星 2006 软物质物理学导论 (北京: 北京大学出版社)第645页]
[3] Rao K K, Nott P R 2008 An introduction to granular flow (Cambridge: Cambridge University Press) p2
[4] Bak P, Tang C, Wiesenfeld K 1988 Phys. Rev. A 38 364
[5] Jaeger H M, Liu C, Nagel S R 1989 Phys. Rev. Lett. 62 40
[6] Staron L 2008 Phys. Rev. E 77 051304
[7] Artoni R, Santomaso A, Canu P 2011 Phys. Rev. E 83 051304
[8] Jop P, Forterre Y, Pouliquen O 2006 Nature 441 727
[9] Pont S C D, Fischer R, Gondret P, Perrin B, Rabaud M 2005 Phys. Rev. Lett. 94 048003
[10] Socie B A, Umbanhowar P, Lueptow R M, Jain N, Ottino J M 2005 Phys. Rev. E 71 031304
[11] Inagaki T S K S, Nakagawa N, Nasuno S 2001 Phys. Rev. Lett. 86 1757
[12] Lemieux P A, Durian D J 2000 Phys. Rev. Lett. 85 4273
[13] Mueth D M, Debregeas G F, Karczmar G S, Eng P J, Nagel S R, Jaeger H M 2000 Nature 406 385
[14] Fenistein D, Meent J W V D, Hecke M V 2004 Phys. Rev. Lett. 92 094301
[15] Aranson I S, Tsimring L S 2002 Phys. Rev. E 65 061303
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