Fatigue properties and damage constitutive model of salt rock based on CT scanning
To investigate the macroscopic fatigue properties and the mesoscopic pore evolution characteristics of salt rock under cyclic loading, fatigue tests under different upper-limit stresses were carried out on salt rock, and the mesoscopic pore structures of salt rock before and after fatigue tests and...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | International Journal of Mining Science and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268624000132 |
| _version_ | 1827307909921374208 |
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| author | Junbao Wang Xiao Liu Qiang Zhang Xinrong Liu Zhanping Song Shijin Feng |
| author_facet | Junbao Wang Xiao Liu Qiang Zhang Xinrong Liu Zhanping Song Shijin Feng |
| author_sort | Junbao Wang |
| collection | DOAJ |
| description | To investigate the macroscopic fatigue properties and the mesoscopic pore evolution characteristics of salt rock under cyclic loading, fatigue tests under different upper-limit stresses were carried out on salt rock, and the mesoscopic pore structures of salt rock before and after fatigue tests and under different cycle numbers were measured using CT scanning instrument. Based on the test results, the effects of the cycle number and the upper-limit stress on the evolution of cracks, pore morphology, pore number, pore volume, pore size, plane porosity, and volume porosity of salt rock were analyzed. The failure path of salt rock specimens under cyclic loading was analyzed using the distribution law of plane porosity. The damage variable of salt rock under cyclic loading was defined on basis of the variation of volume porosity with cycle number. In order to describe the fatigue deformation behavior of salt rock under cyclic loading, the nonlinear Burgers damage constitutive model was further established. The results show that the model established can better reflect the whole development process of fatigue deformation of salt rock under cyclic loading. |
| first_indexed | 2024-04-24T18:48:20Z |
| format | Article |
| id | doaj.art-3c89bb53085d43e0b1cf1095ed876be9 |
| institution | Directory Open Access Journal |
| issn | 2095-2686 |
| language | English |
| last_indexed | 2024-04-24T18:48:20Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj.art-3c89bb53085d43e0b1cf1095ed876be92024-03-27T04:51:55ZengElsevierInternational Journal of Mining Science and Technology2095-26862024-02-01342245259Fatigue properties and damage constitutive model of salt rock based on CT scanningJunbao Wang0Xiao Liu1Qiang Zhang2Xinrong Liu3Zhanping Song4Shijin Feng5College of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; Shaanxi Key Lab of Geotechnical and Underground Space Engineering, Xi’an 710055, China; Corresponding author.College of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; Shaanxi Key Lab of Geotechnical and Underground Space Engineering, Xi’an 710055, China; Corresponding author.College of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; Shaanxi Key Lab of Geotechnical and Underground Space Engineering, Xi’an 710055, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400045, ChinaCollege of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; Shaanxi Key Lab of Geotechnical and Underground Space Engineering, Xi’an 710055, ChinaDepartment of Geotechnical Engineering, Tongji University, Shanghai 200092, ChinaTo investigate the macroscopic fatigue properties and the mesoscopic pore evolution characteristics of salt rock under cyclic loading, fatigue tests under different upper-limit stresses were carried out on salt rock, and the mesoscopic pore structures of salt rock before and after fatigue tests and under different cycle numbers were measured using CT scanning instrument. Based on the test results, the effects of the cycle number and the upper-limit stress on the evolution of cracks, pore morphology, pore number, pore volume, pore size, plane porosity, and volume porosity of salt rock were analyzed. The failure path of salt rock specimens under cyclic loading was analyzed using the distribution law of plane porosity. The damage variable of salt rock under cyclic loading was defined on basis of the variation of volume porosity with cycle number. In order to describe the fatigue deformation behavior of salt rock under cyclic loading, the nonlinear Burgers damage constitutive model was further established. The results show that the model established can better reflect the whole development process of fatigue deformation of salt rock under cyclic loading.http://www.sciencedirect.com/science/article/pii/S2095268624000132Salt rockCyclic loadingCT scanningMesoscopic pore evolutionConstitutive model |
| spellingShingle | Junbao Wang Xiao Liu Qiang Zhang Xinrong Liu Zhanping Song Shijin Feng Fatigue properties and damage constitutive model of salt rock based on CT scanning International Journal of Mining Science and Technology Salt rock Cyclic loading CT scanning Mesoscopic pore evolution Constitutive model |
| title | Fatigue properties and damage constitutive model of salt rock based on CT scanning |
| title_full | Fatigue properties and damage constitutive model of salt rock based on CT scanning |
| title_fullStr | Fatigue properties and damage constitutive model of salt rock based on CT scanning |
| title_full_unstemmed | Fatigue properties and damage constitutive model of salt rock based on CT scanning |
| title_short | Fatigue properties and damage constitutive model of salt rock based on CT scanning |
| title_sort | fatigue properties and damage constitutive model of salt rock based on ct scanning |
| topic | Salt rock Cyclic loading CT scanning Mesoscopic pore evolution Constitutive model |
| url | http://www.sciencedirect.com/science/article/pii/S2095268624000132 |
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