Dynamic analysis on impact fragmentation of granular systems

Jiang Shi -ping; Yu Hai -long; Rui Xiao -ting; Hong Jun; Li Chao

doi:10.11883/1001-1455(2014)02-0247-05

Volume 34 Issue 2

May 2014

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2014 > 34(2): 247-251

Jiang Shi -ping, Yu Hai -long, Rui Xiao -ting, Hong Jun, Li Chao. Dynamic analysis on impact fragmentation of granular systems[J]. Explosion And Shock Waves, 2014, 34(2): 247-251. doi: 10.11883/1001-1455(2014)02-0247-05

Citation:

Jiang Shi -ping, Yu Hai -long, Rui Xiao -ting, Hong Jun, Li Chao. Dynamic analysis on impact fragmentation of granular systems[J]. Explosion And Shock Waves, 2014, 34(2): 247-251. doi: 10.11883/1001-1455(2014)02-0247-05

Citation:

PDF( 1744 KB)

Dynamic analysis on impact fragmentation of granular systems

doi: 10.11883/1001-1455(2014)02-0247-05

1.
Institute of Launch Dynamics, Nanjing University of Science and Technology, Nanjing210094, Jiangsu, China
2.
Department of Engineering Mechanics, School of Civil Engineering, Southeast University, Nanjing210096, Jiangsu, China

Funds: Supported by the National Natural Science Foundation of China (11102089)

More Information

Corresponding author: Yu Hai-long, yhls02080888@sina.com
Received Date: 2012-09-18
Rev Recd Date: 2013-01-21
Publish Date: 2014-03-25

Abstract

Abstract

Aimed to a granular system composed of spherical particles, the particles were divided into a spring -spherical elements system based on the discrete element method.The calculation models were given for the elastic and contact forces between discrete elements.And the Mohr -Coulomb failure rule was used to estimate the fragmentation of the discrete elements.The above methods were applied to numerically simulate the impact fragmentation process of the granular system composed of brittle material in a cylinder.In the numerical simulations, the fragmentation states of each particle in the granular system at different times were followed.And the main influencing factors were analyzed on the simulated results.The investigations display that in the numerical simulation, it is necessary to consider the balance between computational accuracy and time.And under the same computational conditions, the calculated fragmentation degrees of granular systems will vary with the packing ways of the particles.
- solid mechanics,
- fragmentation,
- discrete element method,
- granules

FullText(HTML)

References(11)

References

[1]	吴爱祥, 孙业志, 刘湘平.散体动力学理论及其应用[M].北京: 冶金工业出版社, 2002.
[2]	芮筱亭, 贠来峰, 王国平, 等.弹药发射安全性导论[M].北京: 国防工业出版社, 2009.
[3]	江见鲸, 陆新征, 叶列平.混凝土结构有限元分析[M].北京: 清华大学出版社, 2005: 56-64.
[4]	Cundall P A. A computer model for simulating progressive large scale movement in block rock system[C]//Symposium ISRM. 1971: 129-136.
[5]	Addeta G A, Kun F, Ramm E. On the application of a discrete mode to the fracture process of cohesive granular materials[J]. Granular Matter, 2002, 4(2): 77-90. doi: 10.1007/s10035-002-0103-9
[6]	Carmona H A, Wittel F K, Kun F, et al. Fragmentation process in impact of spheres[J]. Physical Review E, 2008, 77(5): 051302. doi: 10.1103/PhysRevE.77.051302
[7]	Shan Li, Cheng Ming, Liu Kai-xin, et al. New discrete element models for three-dimensional impact problems[J]. Chinese Physics Letters, 2009, 26(12): 120202. doi: 10.1088/0256-307X/26/12/120202/pdf
[8]	刘凯欣, 高凌天.离散元法在求解三维冲击动力学问题中的应用[J].固体力学学报, 2004, 25(2): 181-185. doi: 10.3969/j.issn.0254-7805.2004.02.011 Liu Kai-xin, Gao Ling-tian. The application of discrete element method in solving three-dimensional impact dynamics problems[J]. Acta Mechanica Solida Sinica, 2004, 25(2): 181-185. doi: 10.3969/j.issn.0254-7805.2004.02.011
[9]	Mishra B K, Murty C V R. On the determination of contact parameters for realistic DEM simulation of ball mills[J]. Powder Technology, 2001, 115: 290-297. doi: 10.1016/S0032-5910(00)00347-8
[10]	Kruggel-Emden H, Wirtz S, Scherer V. Applicable contact model for the discrete element method: The single particle perspective[C]//Pressure Vessels and Piping Conference(PVP2008). Chicago, 2008.
[11]	目黑公郎, 博野元彦.用粒状体模拟混凝土结构的破坏分析[J].东京大学地质研究所汇报, 1991, 63(4): 409-468. Mekuro K, Hakano T. Fracture analysis of concrete structures by granule simulation[J]. Research Report of Geology Institute of Tokyo University, 1991, 63(4): 409-468.