Numerical modeling of rock fracture and fragmentation under impact loading using discrete element method

作者：Chi, Enan; Zhao, Mingsheng; Liu, Jun^*; Kang, Qiang

来源：Advances in Mechanical Engineering, 2015, 7(6): 1687814015590295.

DOI：10.1177/1687814015590295

• Rock materials
• fracture and fragmentation
• discrete element method
• beam-particle model

The fracture and fragmentation of rock materials are basic and important problem in geomechanics and blasting engineering. An approach, which can simulate the process of fracture and fragmentation of rock materials, is introduced in this work. A beam-particle model is first introduced in the frame of the discrete element method. In the beam-particle model, the neighboring elements are connected by beams. Consequently, a beam network is formed in the particle system. The strength characteristics of rock materials are reflected by the beam network. The strength criterion was then built to verify whether a beam exists or not. The process of rock fracture and fragmentation is described by the gradual disappearance of beams. Finally, two cases were presented to indicate the validity of the method proposed in this work.

• 出版日期2015-6
• 单位河海大学