剪切平行板间密集颗粒流的接触力分布及各向异性分析

孟凡净; 刘焜; 王伟

doi:10.3879/j.issn.1000-0887.2013.07.006

剪切平行板间密集颗粒流的接触力分布及各向异性分析

doi: 10.3879/j.issn.1000-0887.2013.07.006

合肥工业大学摩擦学研究所,合肥 230009

基金项目: 国家自然科学基金资助项目（51175136; 51005067）

详细信息

作者简介:
孟凡净(1981—),男,济南人,讲师,博士生(通讯作者.E-mail:mengfanjing0901@126.com);刘焜(1963—),男,汉中人,教授,博士生导师(E-mail: liukun@hfut.edu.cn).

中图分类号: O373
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出版历程
- 收稿日期: 2013-05-14
- 修回日期: 2013-05-23
- 刊出日期: 2013-07-15

Contact Force Distribution and Anisotropic Analysis in Dense Granular Flow Between the Shearing Parallel Plates

Institute of Tribology, Hefei University of Technology, Hefei 230009, P.R.China

摘要

摘要: 研究了剪切平行板间密集颗粒流的接触力分布规律、接触力网络的各向异性、颗粒摩擦因数对宏观流变特性及细观力链分布的影响等．为了研究以上内容，应用计算机建立了离散元数值分析模型．数值分析结果表明，颗粒之间的接触力分布按幂函数规律变化；接触角分布服从指数函数规律，平均法向接触力随平均接触角任意上下振荡变化；波动速度大小为宏观流变顺畅与否的关键性评价指标，而在细观力链方面，当剪切平行板间颗粒流变不畅时会伴随着超强力链数目显著增加．
- 密集颗粒流 /
- 离散元 /
- 接触力
Abstract: The probability distribution of contact force, anisotropy of contact force network, the friction influence on macro rheological and micro force chain distribution in dense granular flow between shearing parallel plates were discussed. A discrete element numerical analysis model was established for study. The numerical analysis results show that the probability distribution of contact force confoms to power law; the contact angle comply with exponent law and the average normal contact force oscillates up and down randomly with the average contact angle chage; the magnitude of wave velocity is a key evaluation index for macro rheology smoothness, and in micro force chain aspect, super force chain number increases notably when the granular flow is not smooth between the shearing parallel plates.
- dense granular flow /
- discrete element /
- contact force

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参考文献(14)

[1]	孙其诚, 王光谦. 颗粒物质力学导论[M]. 北京：科学出版社, 2009. （SUN Qi-cheng, WANG Guang-qian. Granular Matter Mechanical Introduction [M]. Beijing: Science Press, 2009. （in Chinese））
[2]	Tordesillas A, Walker D M, Lin Q. Force cycles and force chains[J].Physical Review E,2010, 81(1): 1-10.
[3]	Mueth D M, Jaeger H M, Nagel S R. Force distribution in a granular medium[J].Physical Review E,1998, 57(3): 3164-3169.
[4]	Majmudar T S, Behringer R P. Contact force measurements and stress-induced anisotropy in granular materials[J].Nature,2005, 435(23):1079-1082.
[5]	Wang W, Liu X J, Liu K. Experimental research on force transmission of dense granular assembly under shearing in TaylorCouette geometry[J].Trobol Lett,2012, 48(2): 229-236.
[6]	Cundall P A, Strack A. A discrete numerical model for granular assemblies[J].Geotechnique,1979, 29(1): 47-65.
[7]	毕忠伟, 孙其诚, 刘建国, 金峰, 张楚汉. 双轴压缩下颗粒物质剪切带的形成与发展[J]. 物理学报, 2011, 60(3): 1-10. （BI Zhong-wei, SUN Qi-cheng, LIU Jian-guo, JIN Feng, ZHANG Chu-han. Development of shear band in a granular material in biaxial tests[J].Acta Phys Sin,2011, 60(3): 1-10. (in Chinese)）
[8]	Arevalo R, Zuriguel I, Maza D. Topology of the force network in the jamming transition of an isotropically compressed granular packing[J].Physical Review E,2010, 81(4): 1-7.
[9]	Sazzad M M, Suzuki K, Razavi A M F A. Macromicro responses of granular materials under different b-values using DEM[J].International Journal of Geomechanics,2012, 5(7): 220-228.
[10]	Gu X Q, Yang J, Huang M. DEM simulations of small strain stiffness of granular soils: effect of stress ratio[J].Granular Matter,2013, 22(3): 22-32.
[11]	孙其诚, 王光谦. 静态堆积颗粒中的力链分布[J]. 物理学报, 2008, 57(8): 4667-4674.（SUN Qi-cheng, WANG Guang-qian. Force distribution in static granular matter in two dimensions[J]. Acta Phys Sin,2008, 57(8): 4667-4674. (in Chinese)）
[12]	Lu L S, Hsiau S S. DEM simulation of particle mixing in a sheared granular flow[J].Particuology,2008, 6(6): 445-454.
[13]	Radjai F, Michel J, Moreau J J, Roux S. Force distributions in dense two-dimensional granular systems[J].Physical Review Letters,1996, 77(2): 274-277.
[14]	孙其诚, 程晓辉, 季顺迎, 金峰. 岩土类颗粒物质宏细观力学研究进展[J]. 力学进展, 2011, 41(3): 351-369. （SUN Qi-cheng, CHENG Xiao-hui, JI Shun-ying, JIN Feng. The macro-micro mechanical research progress of geotechnical class granular matter[J].Advances in Mechanics,2011, 41(3): 351-369. (in Chinese)）

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剪切平行板间密集颗粒流的接触力分布及各向异性分析

doi: 10.3879/j.issn.1000-0887.2013.07.006

作者简介:
孟凡净(1981—),男,济南人,讲师,博士生(通讯作者.E-mail:mengfanjing0901@126.com);刘焜(1963—),男,汉中人,教授,博士生导师(E-mail: liukun@hfut.edu.cn).

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Contact Force Distribution and Anisotropic Analysis in Dense Granular Flow Between the Shearing Parallel Plates

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留言板

剪切平行板间密集颗粒流的接触力分布及各向异性分析

doi: 10.3879/j.issn.1000-0887.2013.07.006

作者简介: 孟凡净(1981—),男,济南人,讲师,博士生(通讯作者.E-mail:mengfanjing0901@126.com);刘焜(1963—),男,汉中人,教授,博士生导师(E-mail: liukun@hfut.edu.cn).

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出版历程

Contact Force Distribution and Anisotropic Analysis in Dense Granular Flow Between the Shearing Parallel Plates

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出版历程

目录

作者简介:
孟凡净(1981—),男,济南人,讲师,博士生(通讯作者.E-mail:mengfanjing0901@126.com);刘焜(1963—),男,汉中人,教授,博士生导师(E-mail: liukun@hfut.edu.cn).