Energy Evolution Law and Fractal Characteristics of Different Rock Specimen Sizes on Dynamic Compression
To explore the broken energy change and the specimen fragment influence of granite where the length-to-diameter ratio is 0.5–2, the SHPB device was used to perform dynamic loading on the granite specimens. The rock energy evolution law was analyzed by the energy time history curve, and according to...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2022/5339603 |
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| _version_ | 1849308732110929920 |
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| author | Jun Zhou Wensong Xu Guangming Zhao Xiangrui Meng Yingming Li Xukun Wu Yuguang Li Xiang Cheng |
| author_facet | Jun Zhou Wensong Xu Guangming Zhao Xiangrui Meng Yingming Li Xukun Wu Yuguang Li Xiang Cheng |
| author_sort | Jun Zhou |
| collection | DOAJ |
| description | To explore the broken energy change and the specimen fragment influence of granite where the length-to-diameter ratio is 0.5–2, the SHPB device was used to perform dynamic loading on the granite specimens. The rock energy evolution law was analyzed by the energy time history curve, and according to rock fragment characteristics, the rock fractal dimension was calculated. The experimental results show that the rock energy-time history curve can be divided into four stages. The incident energy is independent of the length-to-diameter ratio of the rock specimens. When the length-to-diameter ratio of the rock specimens is 0.5–0.9, the difference of incident energy, transmitted energy, and reflection energy of rock specimens is small. With the length-to-diameter ratio increasing, the rock fragment size became larger. These rock fragments have good self-similarity. The rock specimen fractal dimension is at least 1.94, and the maximum D is 2.536. And with the length-to-diameter ratios increasing, the fractal dimension of rock specimens decreases. With the specimen fractal dimension increasing, the energy dissipation density of rock specimens also increases. The higher the energy dissipation density of a rock specimen, the more uniform rock fragments are. |
| format | Article |
| id | doaj-art-1a413c7f864c41eda2a2422f636dae40 |
| institution | Kabale University |
| issn | 1468-8123 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-1a413c7f864c41eda2a2422f636dae402025-08-20T03:54:23ZengWileyGeofluids1468-81232022-01-01202210.1155/2022/5339603Energy Evolution Law and Fractal Characteristics of Different Rock Specimen Sizes on Dynamic CompressionJun Zhou0Wensong Xu1Guangming Zhao2Xiangrui Meng3Yingming Li4Xukun Wu5Yuguang Li6Xiang Cheng7State Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and ControlSchool of Safety Science and EngineeringState Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and ControlState Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and ControlState Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and ControlState Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and ControlSchool of Safety Science and EngineeringState Key Laboratory of Deep Coal Mine Mining Response and Disaster Prevention and ControlTo explore the broken energy change and the specimen fragment influence of granite where the length-to-diameter ratio is 0.5–2, the SHPB device was used to perform dynamic loading on the granite specimens. The rock energy evolution law was analyzed by the energy time history curve, and according to rock fragment characteristics, the rock fractal dimension was calculated. The experimental results show that the rock energy-time history curve can be divided into four stages. The incident energy is independent of the length-to-diameter ratio of the rock specimens. When the length-to-diameter ratio of the rock specimens is 0.5–0.9, the difference of incident energy, transmitted energy, and reflection energy of rock specimens is small. With the length-to-diameter ratio increasing, the rock fragment size became larger. These rock fragments have good self-similarity. The rock specimen fractal dimension is at least 1.94, and the maximum D is 2.536. And with the length-to-diameter ratios increasing, the fractal dimension of rock specimens decreases. With the specimen fractal dimension increasing, the energy dissipation density of rock specimens also increases. The higher the energy dissipation density of a rock specimen, the more uniform rock fragments are.http://dx.doi.org/10.1155/2022/5339603 |
| spellingShingle | Jun Zhou Wensong Xu Guangming Zhao Xiangrui Meng Yingming Li Xukun Wu Yuguang Li Xiang Cheng Energy Evolution Law and Fractal Characteristics of Different Rock Specimen Sizes on Dynamic Compression Geofluids |
| title | Energy Evolution Law and Fractal Characteristics of Different Rock Specimen Sizes on Dynamic Compression |
| title_full | Energy Evolution Law and Fractal Characteristics of Different Rock Specimen Sizes on Dynamic Compression |
| title_fullStr | Energy Evolution Law and Fractal Characteristics of Different Rock Specimen Sizes on Dynamic Compression |
| title_full_unstemmed | Energy Evolution Law and Fractal Characteristics of Different Rock Specimen Sizes on Dynamic Compression |
| title_short | Energy Evolution Law and Fractal Characteristics of Different Rock Specimen Sizes on Dynamic Compression |
| title_sort | energy evolution law and fractal characteristics of different rock specimen sizes on dynamic compression |
| url | http://dx.doi.org/10.1155/2022/5339603 |
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