 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12977 |
| In Russian (Èçâ. ÐÀÍ. ÌÒÒ): | | 8096
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| In English (Mech. Solids): | | 4881 |
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| Houxu Huang, Yongxiang Cai, Rui Pan, Yi Cai, Chao Yan, Shuai Yin, and Huazhang Shen, "Creep-Life for Brittle Rocks Subjected to Uniaxial Compression: a Theoretical Investigation," Mech. Solids. 59 (5), 3008-3023 (2024) |
| Year |
2024 |
Volume |
59 |
Number |
5 |
Pages |
3008-3023 |
| DOI |
10.1134/S0025654424605044 |
| Title |
Creep-Life for Brittle Rocks Subjected to Uniaxial Compression: a Theoretical Investigation |
| Author(s) |
Houxu Huang (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Hefei, China; Anhui Institute of Intelligent Underground Detection Technology, Hefei, China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China)
Yongxiang Cai (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Hefei, China; Anhui Provincial Intelligent Underground Detection and Geoenvironmental Engineering Research Center, Hefei, China; Anhui Cultural Tourism Innovative Development Research Institute, Hefei, China;College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China, caiyongxiang@ahjzu.edu.cn)
Rui Pan (College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China)
Yi Cai (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Hefei, China; Anhui Institute of Intelligent Underground Detection Technology, Hefei, China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China)
Chao Yan (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Hefei, China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China)
Shuai Yin (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Hefei, China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China)
Huazhang Shen (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Hefei, China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China) |
| Abstract |
The failure and damage of brittle rock is attributed to crack development, there is crack
propagation inside the brittle rock even the applied stress is lower than the rock strength. Establishing
the theoretical relationship between the external loading and the local stress that around the crack is
not only helpful for understanding the mechanisms underlying the creep behavior of brittle rock, but
also offers the possibility of theoretically estimating the creep-life of brittle rock. In this paper, the
cracks in the cylindrical rock specimen are assumed to be uniformly distributed and penny-shaped
with their major axes parallel to the axial direction of the cylindrical rock specimen, the creep-life of
brittle rock refers specifically to the total time consumed in the subcritical crack growth stage.
The expressions and direction of the local stresses around the crack tips are derived based on dividing
the local stress into two parts. The phenomenon of brittle rock exhibiting tensile failure under the uniaxial compression is preliminarily explained. The crack propagation rate that directly related to the
local tensile stress is derived. The requirements for subcritical crack growth are theoretically analyzed.
A new expression of creep-life of brittle rock with a clear physical meaning and the key parameter "Ψ" is established. Considering that the theoretical studies on estimating the creep-life of brittle rock are”
rare, and the experiments related to the creep-life are very time-consuming. Therefore, this study may
provide an effective approach for theoretically estimating the creep-life of brittle rock under the given uniaxial compressive stress state. |
| Keywords |
brittle rock, tensile propagation of microcrack, subcritical crack growth stage, creep-life, magnitude of parameter "Ψ" |
| Received |
14 August 2024 | Revised |
29 September 2024 | Accepted |
12 October 2024 |
| Link to Fulltext |
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