期刊
FACTA UNIVERSITATIS-SERIES MECHANICAL ENGINEERING
卷 16, 期 1, 页码 41-50出版社
UNIV NIS
DOI: 10.22190/FUME171229010D
关键词
Fracture; Mesh-Dependence; Discrete Element Method; Particle Size
资金
- Fundamental Research Program of the State Academies of Science for 2013-2020 (Russia)
- Deutscher Akademischer Austauschdienst (DAAD)
Recently, Pohrt and Popov have shown that for simulation of adhesive contacts a mesh dependent detachment criterion must be used to obtain the mesh-independent macroscopic behavior of the system. The same principle should be also applicable for the simulation of fracture processes in any method using finite discretization. In particular, in the Discrete Element Methods (DEM) the detachment criterion of particles should depend on the particle size. In the present paper, we analyze how the mesh dependent detachment criterion has to be introduced to guarantee the macroscopic invariance of mechanical behavior of a material. We find that it is possible to formulate the criterion which describes fracture both in tensile and shear experiments correctly.
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