Numerical Analysis of Mechanical Characteristics of Constant-Resistance, Energy-Absorbing and Anti-Scour Bolts
In order to improve the impact resistance mechanical properties of bolt, the requirements of rock burst roadway support must be met. Based on the requirements that the anchor should have a reasonable deformation load threshold, high stroke efficiency, constant reaction force and stable repeatable de...
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| Format: | Article |
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MDPI AG
2022-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/10/3464 |
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| author | Zhi Tang Hao Wu Ying Liu Yishan Pan Jinguo Lv Dezhi Chang |
| author_facet | Zhi Tang Hao Wu Ying Liu Yishan Pan Jinguo Lv Dezhi Chang |
| author_sort | Zhi Tang |
| collection | DOAJ |
| description | In order to improve the impact resistance mechanical properties of bolt, the requirements of rock burst roadway support must be met. Based on the requirements that the anchor should have a reasonable deformation load threshold, high stroke efficiency, constant reaction force and stable repeatable deformation damage mode. A constant resistance anti-impact device was designed, and a new constant resistance energy-absorbing impact anchor rod was designed in combination with a conventional anchor rod, and the working principle of a constant resistance energy-absorbing impact anchor rod was given. ABAQUS finite element software was used to analyze the mechanical properties of bolt and the results showed that the constant resistance energy-absorbing anti-shock anchor has a stable and repeatable deformation damage mode under both static and impact loads, and the three indexes of the constant resistance energy-absorbing anti-shock anchor, such as yield distance, impact resistance time and energy absorption, are significantly better than those of the conventional anchor. The impact energy and impact velocity have less influence on the load-bearing capacity and stroke efficiency of the impact device. The impact velocity has less influence on the indices of the rod yield load, breaking load, absorbed energy and the yield distance of a conventional anchor and constant resistance energy-absorbing anti-stroke anchor, and the impact resistance time decreases non-linearly with the increase in the impact velocity. |
| first_indexed | 2024-03-10T03:31:52Z |
| format | Article |
| id | doaj.art-6ca6e918b6c64ef3b7881d29303aaff8 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:31:52Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-6ca6e918b6c64ef3b7881d29303aaff82023-11-23T11:55:43ZengMDPI AGMaterials1996-19442022-05-011510346410.3390/ma15103464Numerical Analysis of Mechanical Characteristics of Constant-Resistance, Energy-Absorbing and Anti-Scour BoltsZhi Tang0Hao Wu1Ying Liu2Yishan Pan3Jinguo Lv4Dezhi Chang5School of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaSchool of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaSchool of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaSchool of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaSchool of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaSchool of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, ChinaIn order to improve the impact resistance mechanical properties of bolt, the requirements of rock burst roadway support must be met. Based on the requirements that the anchor should have a reasonable deformation load threshold, high stroke efficiency, constant reaction force and stable repeatable deformation damage mode. A constant resistance anti-impact device was designed, and a new constant resistance energy-absorbing impact anchor rod was designed in combination with a conventional anchor rod, and the working principle of a constant resistance energy-absorbing impact anchor rod was given. ABAQUS finite element software was used to analyze the mechanical properties of bolt and the results showed that the constant resistance energy-absorbing anti-shock anchor has a stable and repeatable deformation damage mode under both static and impact loads, and the three indexes of the constant resistance energy-absorbing anti-shock anchor, such as yield distance, impact resistance time and energy absorption, are significantly better than those of the conventional anchor. The impact energy and impact velocity have less influence on the load-bearing capacity and stroke efficiency of the impact device. The impact velocity has less influence on the indices of the rod yield load, breaking load, absorbed energy and the yield distance of a conventional anchor and constant resistance energy-absorbing anti-stroke anchor, and the impact resistance time decreases non-linearly with the increase in the impact velocity.https://www.mdpi.com/1996-1944/15/10/3464constant-resistance energy-absorbinganti-scour boltconstant resistance anti-impact deviceimpact energyimpact velocity |
| spellingShingle | Zhi Tang Hao Wu Ying Liu Yishan Pan Jinguo Lv Dezhi Chang Numerical Analysis of Mechanical Characteristics of Constant-Resistance, Energy-Absorbing and Anti-Scour Bolts Materials constant-resistance energy-absorbing anti-scour bolt constant resistance anti-impact device impact energy impact velocity |
| title | Numerical Analysis of Mechanical Characteristics of Constant-Resistance, Energy-Absorbing and Anti-Scour Bolts |
| title_full | Numerical Analysis of Mechanical Characteristics of Constant-Resistance, Energy-Absorbing and Anti-Scour Bolts |
| title_fullStr | Numerical Analysis of Mechanical Characteristics of Constant-Resistance, Energy-Absorbing and Anti-Scour Bolts |
| title_full_unstemmed | Numerical Analysis of Mechanical Characteristics of Constant-Resistance, Energy-Absorbing and Anti-Scour Bolts |
| title_short | Numerical Analysis of Mechanical Characteristics of Constant-Resistance, Energy-Absorbing and Anti-Scour Bolts |
| title_sort | numerical analysis of mechanical characteristics of constant resistance energy absorbing and anti scour bolts |
| topic | constant-resistance energy-absorbing anti-scour bolt constant resistance anti-impact device impact energy impact velocity |
| url | https://www.mdpi.com/1996-1944/15/10/3464 |
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