An Experimental Investigation of the Progressive Failure of Sandstone and Its Energy Evolution Characteristics
Joint Authors
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-14
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
In this research study, the progressive failure and energy evolution characteristics of sandstone samples with different sizes were explored under uniaxial and triaxial compression conditions.
The characteristic stresses and strains were captured using the crack axial strain levels and dissipative energy.
The results showed that, with the increase in the ratios of the height to diameter (H/D), the crack closure stresses increased, while the crack damage stresses decreased.
However, the levels of both the crack closure stresses and crack damages were observed to increase with the H/D.
With increase in the confining pressure, it was found that the crack closure and crack damage stresses increased, while their levels decreased.
The strains of the crack closures, peak crack axial, and crack propagation were observed to decrease with the H/D, while the crack closure strain levels increased.
Also, the crack propagation strains were observed to increase with the confining pressures, while the crack closure, peak crack axial, and crack closure strain levels decreased.
The progress failure of the sandstone samples was also obtained based on the evolution characteristics of the dissipative energy.
The relationship between the energy densities during each phase and the H/D was also analyzed.
It was determined that, with the increasing of the H/D, the input, elastic, and dissipative energy densities displayed different evolution characteristics.
Furthermore, with the increases in the characteristic stresses, the input and elastic energy densities were found to increase.
The dissipative energy density displayed a slight increase with the increases in the peak strength, which resulted in variations with regard to the crack closures and crack damage stresses.
American Psychological Association (APA)
Chen, Yan& Guo, Baohua. 2018. An Experimental Investigation of the Progressive Failure of Sandstone and Its Energy Evolution Characteristics. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1116719
Modern Language Association (MLA)
Chen, Yan& Guo, Baohua. An Experimental Investigation of the Progressive Failure of Sandstone and Its Energy Evolution Characteristics. Advances in Civil Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1116719
American Medical Association (AMA)
Chen, Yan& Guo, Baohua. An Experimental Investigation of the Progressive Failure of Sandstone and Its Energy Evolution Characteristics. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1116719
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116719