Calibration of Contact Parameters for Moist Bulk of Shotcrete Based on EDEM
To obtain the contact parameters of the moist bulk of shotcrete accurately and quickly, this study calibrated the contact parameters of the moist bulk of shotcrete by physical stacking test and simulation method. Based on the Hertz–Mindlin with JKR (Johnon–Kendall–Roberts) model, the discrete elemen...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/6072303 |
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| author | Guanguo Ma Zhenjiao Sun Hui Ma Pengcheng Li |
| author_facet | Guanguo Ma Zhenjiao Sun Hui Ma Pengcheng Li |
| author_sort | Guanguo Ma |
| collection | DOAJ |
| description | To obtain the contact parameters of the moist bulk of shotcrete accurately and quickly, this study calibrated the contact parameters of the moist bulk of shotcrete by physical stacking test and simulation method. Based on the Hertz–Mindlin with JKR (Johnon–Kendall–Roberts) model, the discrete element simulation is carried out. Using P-BD to screen seven initial parameters, it is found that JKR surface energy, rolling friction coefficient between particles and restitution coefficient of particle impact have significant effects on the angle of repose of the moist bulk of shotcrete. According to B-BD, the second-order regression model of angle of repose and significance parameters was established. Three significant parameters were obtained: JKR surface energy 0.418 J/m2, rolling friction coefficient 0.06 and static friction coefficient 1. The angle of repose obtained by simulation is compared with the physical test value, and the relative error is 1.88%. The results show that the calibration method proposed in this study can accurately simulate the physical stacking test, and can provide a reference for the calibration of contact parameters of the moist bulk of shotcrete. |
| format | Article |
| id | doaj-art-162b7ff99b814fb585b57f11b10be90f |
| institution | OA Journals |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-162b7ff99b814fb585b57f11b10be90f2025-08-20T02:02:36ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/6072303Calibration of Contact Parameters for Moist Bulk of Shotcrete Based on EDEMGuanguo Ma0Zhenjiao Sun1Hui Ma2Pengcheng Li3College of Energy and Mining EngineeringCollege of Safety and Environmental EngineeringCollege of Energy and Mining EngineeringCollege of Safety and Environmental EngineeringTo obtain the contact parameters of the moist bulk of shotcrete accurately and quickly, this study calibrated the contact parameters of the moist bulk of shotcrete by physical stacking test and simulation method. Based on the Hertz–Mindlin with JKR (Johnon–Kendall–Roberts) model, the discrete element simulation is carried out. Using P-BD to screen seven initial parameters, it is found that JKR surface energy, rolling friction coefficient between particles and restitution coefficient of particle impact have significant effects on the angle of repose of the moist bulk of shotcrete. According to B-BD, the second-order regression model of angle of repose and significance parameters was established. Three significant parameters were obtained: JKR surface energy 0.418 J/m2, rolling friction coefficient 0.06 and static friction coefficient 1. The angle of repose obtained by simulation is compared with the physical test value, and the relative error is 1.88%. The results show that the calibration method proposed in this study can accurately simulate the physical stacking test, and can provide a reference for the calibration of contact parameters of the moist bulk of shotcrete.http://dx.doi.org/10.1155/2022/6072303 |
| spellingShingle | Guanguo Ma Zhenjiao Sun Hui Ma Pengcheng Li Calibration of Contact Parameters for Moist Bulk of Shotcrete Based on EDEM Advances in Materials Science and Engineering |
| title | Calibration of Contact Parameters for Moist Bulk of Shotcrete Based on EDEM |
| title_full | Calibration of Contact Parameters for Moist Bulk of Shotcrete Based on EDEM |
| title_fullStr | Calibration of Contact Parameters for Moist Bulk of Shotcrete Based on EDEM |
| title_full_unstemmed | Calibration of Contact Parameters for Moist Bulk of Shotcrete Based on EDEM |
| title_short | Calibration of Contact Parameters for Moist Bulk of Shotcrete Based on EDEM |
| title_sort | calibration of contact parameters for moist bulk of shotcrete based on edem |
| url | http://dx.doi.org/10.1155/2022/6072303 |
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