Four-point bending test on a middle strength rock: numerical and experimental investigations
Developing a reliable numerical modelling technique is considered as challenge for fracture assessment of the geological materials, which are much subjected to hydrostatic pressure. For this purpose, the mechanical behaviour and the fracture pattern of a middle strength rock material, called Pietra...
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| Format: | Article |
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Gruppo Italiano Frattura
2017-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_62.pdf |
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| _version_ | 1841562647300931584 |
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| author | Aria Mardalizad Riccardo Scazzosi Andrea Manes Marco Giglio |
| author_facet | Aria Mardalizad Riccardo Scazzosi Andrea Manes Marco Giglio |
| author_sort | Aria Mardalizad |
| collection | DOAJ |
| description | Developing a reliable numerical modelling technique is considered as challenge for fracture assessment of the geological materials, which are much subjected to hydrostatic pressure. For this purpose, the mechanical behaviour and the fracture pattern of a middle strength rock material, called Pietra Serena sandstone, is investigated both numerically and experimentally under a Four-Point Bending (also called Flexural) testing program. For the numerical approach, an innovative method, namely FEMcoupled to-SPH, is exploited due to its capabilities in dealing with rock mechanics related issues. Two different material models, which are the Karagozian and Case Concrete (KCC) and the Extended (Linear) DruckerPrager, are exerted to assess their capabilities. The Flexural strength and the crack initiation area are studied based on the state of the stress in various parts of the specimen in both models, and finally the results obtained from the numerical models are compared with the data obtained from the experimental tests in order to assess the capability of the modelling approach. |
| format | Article |
| id | doaj-art-8d4f80aa5ece4e63abaa280907807c7e |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2017-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-8d4f80aa5ece4e63abaa280907807c7e2025-01-03T00:45:51ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932017-07-01114150452310.3221/IGF-ESIS.41.62Four-point bending test on a middle strength rock: numerical and experimental investigationsAria Mardalizad0 Riccardo Scazzosi1Andrea Manes2Marco Giglio 3Politecnico di Milano, ItalyPolitecnico di Milano, ItalyPolitecnico di Milano, ItalyPolitecnico di Milano, ItalyDeveloping a reliable numerical modelling technique is considered as challenge for fracture assessment of the geological materials, which are much subjected to hydrostatic pressure. For this purpose, the mechanical behaviour and the fracture pattern of a middle strength rock material, called Pietra Serena sandstone, is investigated both numerically and experimentally under a Four-Point Bending (also called Flexural) testing program. For the numerical approach, an innovative method, namely FEMcoupled to-SPH, is exploited due to its capabilities in dealing with rock mechanics related issues. Two different material models, which are the Karagozian and Case Concrete (KCC) and the Extended (Linear) DruckerPrager, are exerted to assess their capabilities. The Flexural strength and the crack initiation area are studied based on the state of the stress in various parts of the specimen in both models, and finally the results obtained from the numerical models are compared with the data obtained from the experimental tests in order to assess the capability of the modelling approach.http://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_62.pdfFlexural testKCCDracker-PragerPietra SerenaFracture |
| spellingShingle | Aria Mardalizad Riccardo Scazzosi Andrea Manes Marco Giglio Four-point bending test on a middle strength rock: numerical and experimental investigations Fracture and Structural Integrity Flexural test KCC Dracker-Prager Pietra Serena Fracture |
| title | Four-point bending test on a middle strength rock: numerical and experimental investigations |
| title_full | Four-point bending test on a middle strength rock: numerical and experimental investigations |
| title_fullStr | Four-point bending test on a middle strength rock: numerical and experimental investigations |
| title_full_unstemmed | Four-point bending test on a middle strength rock: numerical and experimental investigations |
| title_short | Four-point bending test on a middle strength rock: numerical and experimental investigations |
| title_sort | four point bending test on a middle strength rock numerical and experimental investigations |
| topic | Flexural test KCC Dracker-Prager Pietra Serena Fracture |
| url | http://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_62.pdf |
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