Experimental and Numerical Investigations on Feasibility and Validity of Prismatic Rock Specimen in SHPB
The paper presents experimental and numerical studies on the feasibility and validity of using prismatic rock specimens in split Hopkinson pressure bar (SHPB) test. Firstly, the experimental tests are conducted to evaluate the stress and strain uniformity in the prismatic specimens during impact loa...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/7198980 |
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| _version_ | 1832552731079868416 |
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| author | Xibing Li Tao Zhou Diyuan Li Zewei Wang |
| author_facet | Xibing Li Tao Zhou Diyuan Li Zewei Wang |
| author_sort | Xibing Li |
| collection | DOAJ |
| description | The paper presents experimental and numerical studies on the feasibility and validity of using prismatic rock specimens in split Hopkinson pressure bar (SHPB) test. Firstly, the experimental tests are conducted to evaluate the stress and strain uniformity in the prismatic specimens during impact loading. The stress analysis at the ends of the specimen shows that stress equilibrium can be achieved after about three wave reflections in the specimen, and the balance can be well maintained for a certain time after peak stress. The strain analysis reveals that the prismatic specimen deforms uniformly during the dynamic loading period. Secondly, numerical simulation is performed to further verify the stress and strain uniformity in the prismatic specimen in SHPB test. It indicates that the stress equilibrium can be achieved in prismatic specimen despite a certain degree of stress concentration at the corners. The comparative experiments demonstrate that the change of specimen shape has no significant effect on dynamic responses and failure patterns of the specimen. Finally, a dynamic crack propagation test is presented to show the application of the present work in studying fracturing mechanisms under dynamic loading. |
| format | Article |
| id | doaj-art-9fef25bb3c634b319e00bd5d353d524e |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-9fef25bb3c634b319e00bd5d353d524e2025-02-03T05:58:05ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/71989807198980Experimental and Numerical Investigations on Feasibility and Validity of Prismatic Rock Specimen in SHPBXibing Li0Tao Zhou1Diyuan Li2Zewei Wang3School of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaThe paper presents experimental and numerical studies on the feasibility and validity of using prismatic rock specimens in split Hopkinson pressure bar (SHPB) test. Firstly, the experimental tests are conducted to evaluate the stress and strain uniformity in the prismatic specimens during impact loading. The stress analysis at the ends of the specimen shows that stress equilibrium can be achieved after about three wave reflections in the specimen, and the balance can be well maintained for a certain time after peak stress. The strain analysis reveals that the prismatic specimen deforms uniformly during the dynamic loading period. Secondly, numerical simulation is performed to further verify the stress and strain uniformity in the prismatic specimen in SHPB test. It indicates that the stress equilibrium can be achieved in prismatic specimen despite a certain degree of stress concentration at the corners. The comparative experiments demonstrate that the change of specimen shape has no significant effect on dynamic responses and failure patterns of the specimen. Finally, a dynamic crack propagation test is presented to show the application of the present work in studying fracturing mechanisms under dynamic loading.http://dx.doi.org/10.1155/2016/7198980 |
| spellingShingle | Xibing Li Tao Zhou Diyuan Li Zewei Wang Experimental and Numerical Investigations on Feasibility and Validity of Prismatic Rock Specimen in SHPB Shock and Vibration |
| title | Experimental and Numerical Investigations on Feasibility and Validity of Prismatic Rock Specimen in SHPB |
| title_full | Experimental and Numerical Investigations on Feasibility and Validity of Prismatic Rock Specimen in SHPB |
| title_fullStr | Experimental and Numerical Investigations on Feasibility and Validity of Prismatic Rock Specimen in SHPB |
| title_full_unstemmed | Experimental and Numerical Investigations on Feasibility and Validity of Prismatic Rock Specimen in SHPB |
| title_short | Experimental and Numerical Investigations on Feasibility and Validity of Prismatic Rock Specimen in SHPB |
| title_sort | experimental and numerical investigations on feasibility and validity of prismatic rock specimen in shpb |
| url | http://dx.doi.org/10.1155/2016/7198980 |
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