Experimental Study on Dynamic Mechanical Characteristics and Energy Evolution of Sandstone under Cyclic Impact Loading
In order to study the dynamic mechanical properties of the surrounding rock of roadway in deep mines with rock burst, cyclic impact compression tests of sandstone under different impact velocities were carried out by using the split Hopkinson pressure bar (SHPB) test system, and the dynamic stress-s...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2022/4805589 |
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| _version_ | 1849397950762975232 |
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| author | Xicai Gao Huan Xia Xinyu Wang Cheng Zhao Jianhui Yin |
| author_facet | Xicai Gao Huan Xia Xinyu Wang Cheng Zhao Jianhui Yin |
| author_sort | Xicai Gao |
| collection | DOAJ |
| description | In order to study the dynamic mechanical properties of the surrounding rock of roadway in deep mines with rock burst, cyclic impact compression tests of sandstone under different impact velocities were carried out by using the split Hopkinson pressure bar (SHPB) test system, and the dynamic stress-strain curves of the samples under cyclic impact loads and the relationship between energy dissipation and impact numbers were analyzed. The results show that, as the impact loading times increase, the initial elastic modulus of sandstone samples decreases, the peak stress decreases, and the peak strain increases; the average strain rate increases. The cumulative damage of sandstone samples under impact load is significantly affected by impact velocity and times. During the cyclic impact test, the reflected energy of sandstone increases with the increase of impact numbers, while the transmitted energy decreases and the absorbed energy increases; the cumulative specific energy absorption variable is introduced, and the cumulative specific energy absorption value of the samples increases with the increase of impact numbers, which can better characterize the variation of energy accumulation and dissipation of sandstone samples under cyclic impact. |
| format | Article |
| id | doaj-art-a5c8ca8cfc9e439e912e5a358079aa19 |
| institution | Kabale University |
| issn | 1875-9203 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-a5c8ca8cfc9e439e912e5a358079aa192025-08-20T03:38:48ZengWileyShock and Vibration1875-92032022-01-01202210.1155/2022/4805589Experimental Study on Dynamic Mechanical Characteristics and Energy Evolution of Sandstone under Cyclic Impact LoadingXicai Gao0Huan Xia1Xinyu Wang2Cheng Zhao3Jianhui Yin4Xi’an University of Science and TechnologyXi’an University of Science and TechnologySchool of Civil EngineeringXi’an University of Science and TechnologyShaanxi Coal and Chemical Industry Technology Research Institute Co., Ltd.In order to study the dynamic mechanical properties of the surrounding rock of roadway in deep mines with rock burst, cyclic impact compression tests of sandstone under different impact velocities were carried out by using the split Hopkinson pressure bar (SHPB) test system, and the dynamic stress-strain curves of the samples under cyclic impact loads and the relationship between energy dissipation and impact numbers were analyzed. The results show that, as the impact loading times increase, the initial elastic modulus of sandstone samples decreases, the peak stress decreases, and the peak strain increases; the average strain rate increases. The cumulative damage of sandstone samples under impact load is significantly affected by impact velocity and times. During the cyclic impact test, the reflected energy of sandstone increases with the increase of impact numbers, while the transmitted energy decreases and the absorbed energy increases; the cumulative specific energy absorption variable is introduced, and the cumulative specific energy absorption value of the samples increases with the increase of impact numbers, which can better characterize the variation of energy accumulation and dissipation of sandstone samples under cyclic impact.http://dx.doi.org/10.1155/2022/4805589 |
| spellingShingle | Xicai Gao Huan Xia Xinyu Wang Cheng Zhao Jianhui Yin Experimental Study on Dynamic Mechanical Characteristics and Energy Evolution of Sandstone under Cyclic Impact Loading Shock and Vibration |
| title | Experimental Study on Dynamic Mechanical Characteristics and Energy Evolution of Sandstone under Cyclic Impact Loading |
| title_full | Experimental Study on Dynamic Mechanical Characteristics and Energy Evolution of Sandstone under Cyclic Impact Loading |
| title_fullStr | Experimental Study on Dynamic Mechanical Characteristics and Energy Evolution of Sandstone under Cyclic Impact Loading |
| title_full_unstemmed | Experimental Study on Dynamic Mechanical Characteristics and Energy Evolution of Sandstone under Cyclic Impact Loading |
| title_short | Experimental Study on Dynamic Mechanical Characteristics and Energy Evolution of Sandstone under Cyclic Impact Loading |
| title_sort | experimental study on dynamic mechanical characteristics and energy evolution of sandstone under cyclic impact loading |
| url | http://dx.doi.org/10.1155/2022/4805589 |
| work_keys_str_mv | AT xicaigao experimentalstudyondynamicmechanicalcharacteristicsandenergyevolutionofsandstoneundercyclicimpactloading AT huanxia experimentalstudyondynamicmechanicalcharacteristicsandenergyevolutionofsandstoneundercyclicimpactloading AT xinyuwang experimentalstudyondynamicmechanicalcharacteristicsandenergyevolutionofsandstoneundercyclicimpactloading AT chengzhao experimentalstudyondynamicmechanicalcharacteristicsandenergyevolutionofsandstoneundercyclicimpactloading AT jianhuiyin experimentalstudyondynamicmechanicalcharacteristicsandenergyevolutionofsandstoneundercyclicimpactloading |