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Research on Dynamic Response Law of Flexible Metal Net Impacted by Falling Rocks and the Optimization of Net Opening
Targeting the characteristics dynamic response of protective net impacted by falling rocks of different shapes on different positions, this paper establishes finite element models for the impact on metal net by spherical, cylindrical, cubic and tetrahedral stones based on the law of motion of stones, thereby revealing the dynamic response law. In addition, on the basis of damage index of ductile metal in elastic-plastic theory, an optimized hexagonal honeycomb net was designed. The results show that: (1) the maximum kinetic energy of falling rock hitting the metal net was 64.89 kJ at the same height; (2) in the impact on flexible metal net by a cylindrical falling rock, the maximum energy consumption was 54.314 kJ, and the buffer distance was 2.403 m; where spherical falling rocks hit a metal net on different positions, the maximum vertical displacement of the center point was 2.517m, in which circumstance the residual energy of the falling rocks was the smallest; Therefore, this study can provide a basis for the design and selection of flexible metal net for protective engineering.
Research on Dynamic Response Law of Flexible Metal Net Impacted by Falling Rocks and the Optimization of Net Opening
Targeting the characteristics dynamic response of protective net impacted by falling rocks of different shapes on different positions, this paper establishes finite element models for the impact on metal net by spherical, cylindrical, cubic and tetrahedral stones based on the law of motion of stones, thereby revealing the dynamic response law. In addition, on the basis of damage index of ductile metal in elastic-plastic theory, an optimized hexagonal honeycomb net was designed. The results show that: (1) the maximum kinetic energy of falling rock hitting the metal net was 64.89 kJ at the same height; (2) in the impact on flexible metal net by a cylindrical falling rock, the maximum energy consumption was 54.314 kJ, and the buffer distance was 2.403 m; where spherical falling rocks hit a metal net on different positions, the maximum vertical displacement of the center point was 2.517m, in which circumstance the residual energy of the falling rocks was the smallest; Therefore, this study can provide a basis for the design and selection of flexible metal net for protective engineering.
Research on Dynamic Response Law of Flexible Metal Net Impacted by Falling Rocks and the Optimization of Net Opening
Springer Ser.Geomech.,Geoengineer.
Ismail, Mohamed Abdelkader (Herausgeber:in) / Wang, Leiming (Herausgeber:in) / He, Feng (Autor:in) / Li, Haoran (Autor:in) / Wang, Xiangnan (Autor:in) / Wang, Zhenwei (Autor:in)
International Conference on Mineral Resources, Geotechnology and Geological Exploration ; 2024 ; Shijiazhuang, China
24.12.2024
13 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Simulation experiment equipment for railway protection structure impacted by falling rocks
| Europäisches Patentamt | 2024