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Influence of Pore Number on the Tensile and Shear Mechanical Characteristics of Porous Rock-like Materials via the DEM
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Tieyong ZHAO1, Chuanfeng FANG2, 3, Genshui WU2, 3, Xun LIU2, 3, Chenhui HU2
Science Technology and Industry | 2025, 25(6) : 24 - 29
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Science Technology and Industry | 2025, 25(6): 24-29
• Technology Innovation •
Influence of Pore Number on the Tensile and Shear Mechanical Characteristics of Porous Rock-like Materials via the DEM
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Tieyong ZHAO1, Chuanfeng FANG2, 3, Genshui WU2, 3, Xun LIU2, 3, Chenhui HU2
Affiliations
  • 1 Tongchuang Engineering Design Co. Ltd., Shaoxing 312000, Zhejiang, China
  • 2 School of Resources, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
  • 3 Sanya Research Institute, Hunan University of Science and Technology, Sanya 572024, Hainan, China
Published: 2025-03-25
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The tensile and shear properties of porous rock-like materials affect the safety and stability of engineering. In this paper, numerical models with different number of pores were constructed, and the numerical simulation of direct tensile and direct shear tests were carried out by the DEM to explore the influence of the pore number on the tensile and shear characteristics of materials. The results show that the tensile strength, the ratio of compressive strength to tensile strength, cohesion and internal friction angle decrease in different forms with the increase of the pore number. In addition, under tensile action, cracks are mainly formed along the horizontal direction and are not affected by the number of pores. Under shear action, cracks are mainly formed along a certain Angle with the horizontal direction. The increase of the pore number mainly leads to the decrease of the anisotropy of fracture occurrence under shear action.

discrete element numerical simulation  /  pore numbers  /  porous rock-like materials  /  tensile and shear mechanical characteristics
Tieyong ZHAO, Chuanfeng FANG, Genshui WU, Xun LIU, Chenhui HU. Influence of Pore Number on the Tensile and Shear Mechanical Characteristics of Porous Rock-like Materials via the DEM[J]. Science Technology and Industry, 2025 , 25 (6) : 24 -29 .
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Year 2025 volume 25 Issue 6
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Article Info
  • Receive Date：2024-09-13
  • Online Date：2025-07-21
  • Published：2025-03-25
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  • Received：2024-09-13
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Affiliations
    1 Tongchuang Engineering Design Co. Ltd., Shaoxing 312000, Zhejiang, China
    2 School of Resources, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
    3 Sanya Research Institute, Hunan University of Science and Technology, Sanya 572024, Hainan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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