Insights into the X-shaped fissure propagation and interaction mechanisms of rock specimens: 3D printing experiments and DEM simulations
X-shaped fissures are prevalent in natural rocks and significantly influence rock mass stability, yet their interaction and propagation mechanisms remain inadequately studied. This research fabricated rock-like specimens with single and double X-shaped fissures using sand 3D printing technology. Uni...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525005406 |
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| author | Yiqing Sun Wei Huang Lei Gan Zhenzhong Shen Hongwei Zhang Wenbing Zhang |
| author_facet | Yiqing Sun Wei Huang Lei Gan Zhenzhong Shen Hongwei Zhang Wenbing Zhang |
| author_sort | Yiqing Sun |
| collection | DOAJ |
| description | X-shaped fissures are prevalent in natural rocks and significantly influence rock mass stability, yet their interaction and propagation mechanisms remain inadequately studied. This research fabricated rock-like specimens with single and double X-shaped fissures using sand 3D printing technology. Uniaxial compression tests were conducted, and the crack propagation process was analyzed via the DIC method. DEM simulations were also performed to explore the fracture mechanisms. In single X-shaped fissure specimens, crack growth is affected by the inclination angle, with Wing crack (WC) being a dominant propagation mode, and Anti-wing crack (AWC) emerging as the angle increases. In double X-shaped fissure specimens, complex fissure interactions lead to intricate crack propagation, forming through-going main cracks and elaborate crack networks, with Interaction crack (IC) being a notable feature. The stress-strain curves vary with fissure configurations. Specimens with difficult crack propagation generally have higher strength. These findings enhance the understanding of X-shaped fissure fracture mechanisms and offer crucial references for rock engineering design, construction, and stable operation. |
| format | Article |
| id | doaj-art-3447cd41bae541bc9b1085b033f221e6 |
| institution | DOAJ |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-3447cd41bae541bc9b1085b033f221e62025-08-20T02:57:05ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e0474210.1016/j.cscm.2025.e04742Insights into the X-shaped fissure propagation and interaction mechanisms of rock specimens: 3D printing experiments and DEM simulationsYiqing Sun0Wei Huang1Lei Gan2Zhenzhong Shen3Hongwei Zhang4Wenbing Zhang5Intelligent Transportation System Research Center, Southeast University, Nanjing 211189, China; Key Laboratory of Transport Industry of Comprehensive Transportation Theory (Nanjing Modern Multimodal Transportation Laboratory), Nanjing 211100, China; The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210024, ChinaIntelligent Transportation System Research Center, Southeast University, Nanjing 211189, China; Key Laboratory of Transport Industry of Comprehensive Transportation Theory (Nanjing Modern Multimodal Transportation Laboratory), Nanjing 211100, ChinaKey Laboratory of Transport Industry of Comprehensive Transportation Theory (Nanjing Modern Multimodal Transportation Laboratory), Nanjing 211100, China; The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210024, China; Corresponding author at: The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210024, China.Key Laboratory of Transport Industry of Comprehensive Transportation Theory (Nanjing Modern Multimodal Transportation Laboratory), Nanjing 211100, China; The National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210024, ChinaThe National Key Laboratory of Water Disaster Prevention, Hohai University, Nanjing 210024, ChinaCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China; Corresponding author.X-shaped fissures are prevalent in natural rocks and significantly influence rock mass stability, yet their interaction and propagation mechanisms remain inadequately studied. This research fabricated rock-like specimens with single and double X-shaped fissures using sand 3D printing technology. Uniaxial compression tests were conducted, and the crack propagation process was analyzed via the DIC method. DEM simulations were also performed to explore the fracture mechanisms. In single X-shaped fissure specimens, crack growth is affected by the inclination angle, with Wing crack (WC) being a dominant propagation mode, and Anti-wing crack (AWC) emerging as the angle increases. In double X-shaped fissure specimens, complex fissure interactions lead to intricate crack propagation, forming through-going main cracks and elaborate crack networks, with Interaction crack (IC) being a notable feature. The stress-strain curves vary with fissure configurations. Specimens with difficult crack propagation generally have higher strength. These findings enhance the understanding of X-shaped fissure fracture mechanisms and offer crucial references for rock engineering design, construction, and stable operation.http://www.sciencedirect.com/science/article/pii/S2214509525005406Rock fracture mechanicsCrack propagationX-shaped fissure3D printingDamage evolutionsDEM simulation |
| spellingShingle | Yiqing Sun Wei Huang Lei Gan Zhenzhong Shen Hongwei Zhang Wenbing Zhang Insights into the X-shaped fissure propagation and interaction mechanisms of rock specimens: 3D printing experiments and DEM simulations Case Studies in Construction Materials Rock fracture mechanics Crack propagation X-shaped fissure 3D printing Damage evolutions DEM simulation |
| title | Insights into the X-shaped fissure propagation and interaction mechanisms of rock specimens: 3D printing experiments and DEM simulations |
| title_full | Insights into the X-shaped fissure propagation and interaction mechanisms of rock specimens: 3D printing experiments and DEM simulations |
| title_fullStr | Insights into the X-shaped fissure propagation and interaction mechanisms of rock specimens: 3D printing experiments and DEM simulations |
| title_full_unstemmed | Insights into the X-shaped fissure propagation and interaction mechanisms of rock specimens: 3D printing experiments and DEM simulations |
| title_short | Insights into the X-shaped fissure propagation and interaction mechanisms of rock specimens: 3D printing experiments and DEM simulations |
| title_sort | insights into the x shaped fissure propagation and interaction mechanisms of rock specimens 3d printing experiments and dem simulations |
| topic | Rock fracture mechanics Crack propagation X-shaped fissure 3D printing Damage evolutions DEM simulation |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525005406 |
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