Rock Dynamic Crack Propagation under Different Loading Rates Using Improved Single Cleavage Semi-Circle Specimen
The objective of this paper is to investigate the complete process of dynamic crack propagation in brittle materials under different loading rates. By using Improved Single Cleavage Semi-Circle (ISCSC) specimens and Split Hopkinson Pressure Bar equipment, experiments were conducted, with the fractur...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/9/22/4944 |
| _version_ | 1818559047027130368 |
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| author | Fei Wang Meng Wang Mohaddeseh Mousavi Nezhad Hao Qiu Peng Ying Caoyuan Niu |
| author_facet | Fei Wang Meng Wang Mohaddeseh Mousavi Nezhad Hao Qiu Peng Ying Caoyuan Niu |
| author_sort | Fei Wang |
| collection | DOAJ |
| description | The objective of this paper is to investigate the complete process of dynamic crack propagation in brittle materials under different loading rates. By using Improved Single Cleavage Semi-Circle (ISCSC) specimens and Split Hopkinson Pressure Bar equipment, experiments were conducted, with the fracture phenomenon and crack propagation of tight sandstone investigated. Meanwhile, the process of crack propagation behaviour was simulated. Moreover, with the experimental−numerical method, the crack propagation dynamic stress intensity factor (DSIF) was also calculated. Then, the crack propagation toughness of tight sandstone under different loading rates was investigated and illustrated elaborately. Investigation results demonstrate that ISCSC specimens can achieve the crack arrest position unchanged, and the numerical simulation could effectively deduce the actual crack propagation, as their results were well matched. During crack propagation, the crack propagation DSIF in the whole process increases with the rising loading rate, and so does the crack propagation velocity. Several significant dynamic material parameters of tight sandstone are also given, for engineering reference. |
| first_indexed | 2024-12-14T00:20:15Z |
| format | Article |
| id | doaj.art-04c67498c20942f29aaed33a0d05fa0a |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-14T00:20:15Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-04c67498c20942f29aaed33a0d05fa0a2022-12-21T23:25:15ZengMDPI AGApplied Sciences2076-34172019-11-01922494410.3390/app9224944app9224944Rock Dynamic Crack Propagation under Different Loading Rates Using Improved Single Cleavage Semi-Circle SpecimenFei Wang0Meng Wang1Mohaddeseh Mousavi Nezhad2Hao Qiu3Peng Ying4Caoyuan Niu5MOE Key Laboratory Deep Underground Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaMOE Key Laboratory Deep Underground Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaSchool of Engineering, The University of Warwick, Coventry CV4 7AL, UKMOE Key Laboratory Deep Underground Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaMOE Key Laboratory Deep Underground Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaMOE Key Laboratory Deep Underground Science and Engineering, College of Architecture and Environment, Sichuan University, Chengdu 610065, ChinaThe objective of this paper is to investigate the complete process of dynamic crack propagation in brittle materials under different loading rates. By using Improved Single Cleavage Semi-Circle (ISCSC) specimens and Split Hopkinson Pressure Bar equipment, experiments were conducted, with the fracture phenomenon and crack propagation of tight sandstone investigated. Meanwhile, the process of crack propagation behaviour was simulated. Moreover, with the experimental−numerical method, the crack propagation dynamic stress intensity factor (DSIF) was also calculated. Then, the crack propagation toughness of tight sandstone under different loading rates was investigated and illustrated elaborately. Investigation results demonstrate that ISCSC specimens can achieve the crack arrest position unchanged, and the numerical simulation could effectively deduce the actual crack propagation, as their results were well matched. During crack propagation, the crack propagation DSIF in the whole process increases with the rising loading rate, and so does the crack propagation velocity. Several significant dynamic material parameters of tight sandstone are also given, for engineering reference.https://www.mdpi.com/2076-3417/9/22/4944sandstoneloading ratecrack propagationcrack arrestnumerical simulationdynamic stress intensity factor |
| spellingShingle | Fei Wang Meng Wang Mohaddeseh Mousavi Nezhad Hao Qiu Peng Ying Caoyuan Niu Rock Dynamic Crack Propagation under Different Loading Rates Using Improved Single Cleavage Semi-Circle Specimen Applied Sciences sandstone loading rate crack propagation crack arrest numerical simulation dynamic stress intensity factor |
| title | Rock Dynamic Crack Propagation under Different Loading Rates Using Improved Single Cleavage Semi-Circle Specimen |
| title_full | Rock Dynamic Crack Propagation under Different Loading Rates Using Improved Single Cleavage Semi-Circle Specimen |
| title_fullStr | Rock Dynamic Crack Propagation under Different Loading Rates Using Improved Single Cleavage Semi-Circle Specimen |
| title_full_unstemmed | Rock Dynamic Crack Propagation under Different Loading Rates Using Improved Single Cleavage Semi-Circle Specimen |
| title_short | Rock Dynamic Crack Propagation under Different Loading Rates Using Improved Single Cleavage Semi-Circle Specimen |
| title_sort | rock dynamic crack propagation under different loading rates using improved single cleavage semi circle specimen |
| topic | sandstone loading rate crack propagation crack arrest numerical simulation dynamic stress intensity factor |
| url | https://www.mdpi.com/2076-3417/9/22/4944 |
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