Energy absorption characteristics of novel high-strength and high-toughness steels used for rock support
Nowadays, the development of novel metallic materials for rock support have attracted research interests since they can significantly improve the deformation and energy absorption capacities of rock bolts. Although previous studies proved the importance and mechanical advantages of utilizing high-st...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Journal of Rock Mechanics and Geotechnical Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674775522002244 |
| _version_ | 1797819861427027968 |
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| author | Ding Wang Manchao He Liangjiu Jia Xiaoming Sun Min Xia Xuchun Wang |
| author_facet | Ding Wang Manchao He Liangjiu Jia Xiaoming Sun Min Xia Xuchun Wang |
| author_sort | Ding Wang |
| collection | DOAJ |
| description | Nowadays, the development of novel metallic materials for rock support have attracted research interests since they can significantly improve the deformation and energy absorption capacities of rock bolts. Although previous studies proved the importance and mechanical advantages of utilizing high-strength and high-toughness (HSHT) steels in rock support, there is no systematic analysis to reveal the essential energy absorption parameter and the guidelines for further development of metallic rock support materials. This paper analyzes the energy absorption characteristics of novel HSHT steels (negative Poisson's ratio (NPR) and twinning-induced plasticity (TWIP) steels) in comparison with conventional rock support materials. A physically based crystal plasticity (CP) model was set up and calibrated to study the effect of strain hardening rate (SHR). Meanwhile, the roles of underlying physical mechanisms, i.e. the dislocation density and twin volume fraction, were studied. The results show that the improvement of energy absorption density (EAD) is essential for further development of rock support materials, besides the increase of energy absorption rate (EAR) for previous development of conventional rock support materials. The increase of EAD requires increases of both strength and deformation capacity of materials. For HSHT steels, the decrease of SHR has a positive effect on the improvement of EAD. In addition, the increase of EAD is followed by the increase of twin volume fraction and the decrease of plastic Poisson's ratio which can promote deformation plasticity of materials. Meanwhile, the increase of EAR is correlated with the accumulation of dislocation density, which can increase the strength of materials. This paper provides the theoretical basis and guidelines for developing rock support materials in deep underground engineering and other related fields. |
| first_indexed | 2024-03-13T09:28:52Z |
| format | Article |
| id | doaj.art-11345b4ebc59420cadb7e311fda646b0 |
| institution | Directory Open Access Journal |
| issn | 1674-7755 |
| language | English |
| last_indexed | 2024-03-13T09:28:52Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Rock Mechanics and Geotechnical Engineering |
| spelling | doaj.art-11345b4ebc59420cadb7e311fda646b02023-05-26T04:21:06ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552023-06-0115614411456Energy absorption characteristics of novel high-strength and high-toughness steels used for rock supportDing Wang0Manchao He1Liangjiu Jia2Xiaoming Sun3Min Xia4Xuchun Wang5State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing, 100083, China; Research Institute for Deep Underground Science and Engineering, China University of Mining and Technology, Beijing, 100083, China; Corresponding author. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing, 100083, China.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing, 100083, China; Research Institute for Deep Underground Science and Engineering, China University of Mining and Technology, Beijing, 100083, ChinaDepartment of Disaster Mitigation for Structures, School of Civil Engineering, Tongji University, Shanghai, 200092, China; State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai, 200092, ChinaState Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Beijing, 100083, China; Research Institute for Deep Underground Science and Engineering, China University of Mining and Technology, Beijing, 100083, ChinaDepartment of Geotechnical Engineering, School of Civil Engineering, Tongji University, Shanghai, 200092, ChinaSchool of Civil Engineering, Qingdao University of Technology, Qingdao, 266033, ChinaNowadays, the development of novel metallic materials for rock support have attracted research interests since they can significantly improve the deformation and energy absorption capacities of rock bolts. Although previous studies proved the importance and mechanical advantages of utilizing high-strength and high-toughness (HSHT) steels in rock support, there is no systematic analysis to reveal the essential energy absorption parameter and the guidelines for further development of metallic rock support materials. This paper analyzes the energy absorption characteristics of novel HSHT steels (negative Poisson's ratio (NPR) and twinning-induced plasticity (TWIP) steels) in comparison with conventional rock support materials. A physically based crystal plasticity (CP) model was set up and calibrated to study the effect of strain hardening rate (SHR). Meanwhile, the roles of underlying physical mechanisms, i.e. the dislocation density and twin volume fraction, were studied. The results show that the improvement of energy absorption density (EAD) is essential for further development of rock support materials, besides the increase of energy absorption rate (EAR) for previous development of conventional rock support materials. The increase of EAD requires increases of both strength and deformation capacity of materials. For HSHT steels, the decrease of SHR has a positive effect on the improvement of EAD. In addition, the increase of EAD is followed by the increase of twin volume fraction and the decrease of plastic Poisson's ratio which can promote deformation plasticity of materials. Meanwhile, the increase of EAR is correlated with the accumulation of dislocation density, which can increase the strength of materials. This paper provides the theoretical basis and guidelines for developing rock support materials in deep underground engineering and other related fields.http://www.sciencedirect.com/science/article/pii/S1674775522002244Rock supportSteelEnergy absorptionStrain hardening rate (SHR)Crystal plasticity (CP) |
| spellingShingle | Ding Wang Manchao He Liangjiu Jia Xiaoming Sun Min Xia Xuchun Wang Energy absorption characteristics of novel high-strength and high-toughness steels used for rock support Journal of Rock Mechanics and Geotechnical Engineering Rock support Steel Energy absorption Strain hardening rate (SHR) Crystal plasticity (CP) |
| title | Energy absorption characteristics of novel high-strength and high-toughness steels used for rock support |
| title_full | Energy absorption characteristics of novel high-strength and high-toughness steels used for rock support |
| title_fullStr | Energy absorption characteristics of novel high-strength and high-toughness steels used for rock support |
| title_full_unstemmed | Energy absorption characteristics of novel high-strength and high-toughness steels used for rock support |
| title_short | Energy absorption characteristics of novel high-strength and high-toughness steels used for rock support |
| title_sort | energy absorption characteristics of novel high strength and high toughness steels used for rock support |
| topic | Rock support Steel Energy absorption Strain hardening rate (SHR) Crystal plasticity (CP) |
| url | http://www.sciencedirect.com/science/article/pii/S1674775522002244 |
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