Simulation of rock failure by numerical manifold method under blasting load

LIU Hong-yan; QIN Si-qing; YANG Jun

doi:10.11883/1001-1455(2007)01-0050-07

Volume 27 Issue 1

Oct. 2014

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LIU Hong-yan, QIN Si-qing, YANG Jun. Simulation of rock failure by numerical manifold method under blasting load[J]. Explosion And Shock Waves, 2007, 27(1): 50-56. doi: 10.11883/1001-1455(2007)01-0050-07

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LIU Hong-yan, QIN Si-qing, YANG Jun. Simulation of rock failure by numerical manifold method under blasting load[J]. Explosion And Shock Waves, 2007, 27(1): 50-56. doi: 10.11883/1001-1455(2007)01-0050-07

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Simulation of rock failure by numerical manifold method under blasting load

doi: 10.11883/1001-1455(2007)01-0050-07

1.
Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029,China;
2.
State Key Laboratory of Blasting Science and Technology, Beijng Institute of Technology, Beijing 100081, China

Publish Date: 2007-01-25

Abstract

Abstract

In order to perfectly analyze the dynamics problem by numerical manifold method (NMM), adopts the Newmark method of dynamic finite element method to improve the algorithm in original NMM on the basis of analyzing the solution idea of dynamics problem in NMM. The improved method has three evident advantages over the original one: (1) The solution of this method is convergent without any condition, when selecting suitable parameters; (2) The time step that can be adopted in this method is much longer than that in the original one; (3) The damp effect in the dynamics problem is fully considered. In the end, a calculation example is adopted to illustrate that the improved numerical manifold method can perfectly simulate the whole process of rock failure under impact load, which overcomes the deficiency of FEM in simulating the block movement of rock after failure.
- mechanics of explosion,
- numerical manifold method,
- numerical simulation,
- rock,
- block movement,
- blasting load

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