- Title
- Fractal dimension and energy-damage evolution of deep-bedded sandstone under one-dimensional dynamic and static combined loading
- Creator
- Fan, Wenbing; Zhang, Junwen; Dong, Xukai; Zhang, Yan; Yang, Yang; Zeng, Weigang; Wang, Shanyong
- Relation
- Geomechanics and Geophysics for Geo-Energy and Geo-Resources Vol. 8, no. 177
- Publisher Link
- http://dx.doi.org/10.1007/s40948-022-00487-y
- Publisher
- Springer
- Resource Type
- journal article
- Date
- 2022
- Description
- A one-dimensional (1-D) SHPB was used to conduct dynamic tests on deep-bedded sandstone. The fractal dimension, energy evolution, and distribution curve of deep-bedded sandstone with diverse angles and impact pressures were obtained. In addition, the damage factors were defined and the damage evolution mechanism of deep-bedded sandstone was analyzed. The results show that (1) under low-impact pressure (0.05 MPa), the peak point elastic energy of deep-bedded sandstone occupies the main part of the total energy, while under high-impact pressure (0.4 MPa), the peak point dissipation energy occupies the main part of the total energy. (2) With increasing impact pressure, the energy accumulation rate of deep-bedded sandstone initially increases and subsequently becomes stable. The bedding effect is substantial under low pressure and disappears gradually under high pressure. (3) Under low-impact pressure (0.05 MPa), the damage factor evolution law of 0°, 30°, and 90° deep-bedded sandstone is stable at first and then increases rapidly. Under high-impact pressure (0.4 MPa), the damage factor of deep-bedded sandstone shows an apparent S-shaped curve.
- Subject
- combined dynamic and static loading; fractal dimension; energy distribution; energy evolution; damage evolution
- Identifier
- http://hdl.handle.net/1959.13/1488465
- Identifier
- uon:52449
- Identifier
- ISSN:2363-8419
- Language
- eng
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