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Study of Post-Peak Strain Softening Mechanical Behaviour of Rock Material Based on Hoek–Brown Criterion
Joint Authors
Lin, Qibin
Cao, Ping
Wang, Peixin
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-04-03
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
In order to build the post-peak strain softening model of rock, the evolution laws of rock parameters m,s were obtained by using the evolutionary mode of piecewise linear function regarding the maximum principle stress.
Based on the nonlinear Hoek–Brown criterion, the analytical relationship of the rock strength parameters m,s, cohesion c, and friction angle φ has been developed by theoretical derivation.
According to the analysis on the four different types of rock, it is found that, within the range from 0 to σ3min, the peak hardness of the rock becomes smaller as the confining pressure increases and the degree of rock fragmentation decreases as well.
The post-peak stress-strain curves obtained from the developed softening model are in good agreement with the laboratory test results under different confining pressures.
In conclusion, the analytical method is reasonable, and it can predict the post-peak mechanical behaviour of rock well, which provides a new thought for the rock-softening simulation.
American Psychological Association (APA)
Lin, Qibin& Cao, Ping& Wang, Peixin. 2018. Study of Post-Peak Strain Softening Mechanical Behaviour of Rock Material Based on Hoek–Brown Criterion. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1116363
Modern Language Association (MLA)
Lin, Qibin…[et al.]. Study of Post-Peak Strain Softening Mechanical Behaviour of Rock Material Based on Hoek–Brown Criterion. Advances in Civil Engineering No. 2018 (2018), pp.1-9.
https://search.emarefa.net/detail/BIM-1116363
American Medical Association (AMA)
Lin, Qibin& Cao, Ping& Wang, Peixin. Study of Post-Peak Strain Softening Mechanical Behaviour of Rock Material Based on Hoek–Brown Criterion. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-9.
https://search.emarefa.net/detail/BIM-1116363
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1116363