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The Effect of Confining Pressure and Water Content on Energy Evolution Characteristics of Sandstone under Stepwise Loading and Unloading
Joint Authors
Zou, Zhengsheng
Song, Ki-Il
Chang, Xu
Wang, Shuren
Hagan, Paul
Zhao, Yanhai
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-02-19
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
To investigate the mechanical properties and energy evolution characteristics of sandstone depending on the water contents and confining pressure, the uniaxial and triaxial tests were conducted.
The test results show that the strain energy was stored in the sandstone samples at the prepeak stage, and that is suddenly released when the failure occurred, and energy dissipation is sharply increased at the postpeak stage.
The damage and energy dissipation characteristics of the samples are observed clearly under the stepwise loading and unloading process.
The critical strain energy and energy dissipation show a clear exponential relationship.
The critical elastic energy decreases linearly as the water content increases.
As the confining pressure increases, the critical elastic energy of the samples transforms from linear to exponential.
The concept of energy enhancement factor is proposed to characterize the strengthening effect induced by the confining pressure on the energy storage capacity of the rock samples.
The energy evolution of the sandstone samples is more sensitive to the confining pressure than that of the water content.
American Psychological Association (APA)
Wang, Shuren& Hagan, Paul& Zhao, Yanhai& Chang, Xu& Song, Ki-Il& Zou, Zhengsheng. 2018. The Effect of Confining Pressure and Water Content on Energy Evolution Characteristics of Sandstone under Stepwise Loading and Unloading. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1116055
Modern Language Association (MLA)
Wang, Shuren…[et al.]. The Effect of Confining Pressure and Water Content on Energy Evolution Characteristics of Sandstone under Stepwise Loading and Unloading. Advances in Civil Engineering No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1116055
American Medical Association (AMA)
Wang, Shuren& Hagan, Paul& Zhao, Yanhai& Chang, Xu& Song, Ki-Il& Zou, Zhengsheng. The Effect of Confining Pressure and Water Content on Energy Evolution Characteristics of Sandstone under Stepwise Loading and Unloading. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1116055
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116055