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Teaching Experiment and Simulation Practice of Dynamic Mechanical Properties of Materials in Blasting Engineering Course
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Sheng-lin LI, Shu-feng LIANG, Shi-jun HOU
Blasting | 2023, 40(2) : 223 - 229
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Blasting | 2023, 40(2): 223-229
BLASTING SAFETY
Teaching Experiment and Simulation Practice of Dynamic Mechanical Properties of Materials in Blasting Engineering Course
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Sheng-lin LI, Shu-feng LIANG, Shi-jun HOU
Affiliations
  • School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China
Published: 2023-06-01 doi: 10.3963/j.issn.1001-487X.2023.02.031
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It is an important content in the course of "Blasting Engineering" to master the dynamic mechanical response of rock (body) under the action of blasting dynamic load. Since students majoring in civil or mining engineering lack basic theories such as wave mechanics and rock dynamics, the teaching effect is poor when the knowledge of dynamic mechanical properties of rock is explained in class, which will affect the subsequent learning of rock breakage mechanism. Therefore, the Split Hopkinson Pressure Bar (SHPB) experiment of rock materials is applied to the practical teaching of “Blasting Engineering”. By measuring the dynamic compression strength of rock samples and observing the failure forms of specimens, students are guided to understand the dynamic mechanical response of rock materials under different strain rates. The finite element software LS-DYNA is also used to simulate the SHPB experiment, and the process of stress wave propagation and rock failure is reproduced to achieve the demonstration function of dynamic impact. Practice shows that this teaching method enables students to intuitively perceive the stress wave propagation, clearly understand the dynamic failure mechanism of rock, master the relationship between dynamic mechanical properties of rock materials and strain rate, and lay a foundation for further study of blasting engineering theory.

blasting engineering  /  experimental teaching  /  Split Hopkinson Pressure Bar (SHPB)  /  numerical simulation
Sheng-lin LI, Shu-feng LIANG, Shi-jun HOU. Teaching Experiment and Simulation Practice of Dynamic Mechanical Properties of Materials in Blasting Engineering Course[J]. Blasting, 2023 , 40 (2) : 223 -229 . DOI: 10.3963/j.issn.1001-487X.2023.02.031
Year 2023 volume 40 Issue 2
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doi: 10.3963/j.issn.1001-487X.2023.02.031
  • Receive Date:2023-01-02
  • Online Date:2026-03-18
  • Published:2023-06-01
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  • Received:2023-01-02
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    School of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing 100083, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

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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