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
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
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.
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