Elastoplastic Analysis of Circular Openings in Elasto-Brittle-Plastic Rock Mass Based on Logarithmic Strain
Joint Authors
Yu, Li-yuan
Zhang, Qiang
Li, Cheng
Min, Ming
Jiang, Binsong
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-11
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Rock-like materials, such as coal and soft rock, often manifest larger deformation features.
The prediction values for displacement and failure region based on the commonly used small strain (SS) theory are generally larger than the field test results.
Based on the Euler coordinate system, the logarithmic strain (LS) is employed to describe the actual deformation behavior.
Both of the stresses and displacement of circular opening in elasto-brittle-plastic rock mass are formulated with differential equations.
And a simple approach is proposed to solve the differential equations.
The results show that the plastic radius depends on the elastic parameters, that is, Young’s modulus and Poisson’s ratio, which is different from SS theory.
And the plastic radius and displacement of LS rock mass are smaller than those of SS rock mass, and the displacement of LS rock mass is absolutely smaller than the excavation radius.
The proposed solutions can provide theoretical foundation for the optimization of supporting structure in underground engineering.
American Psychological Association (APA)
Zhang, Qiang& Li, Cheng& Min, Ming& Jiang, Binsong& Yu, Li-yuan. 2017. Elastoplastic Analysis of Circular Openings in Elasto-Brittle-Plastic Rock Mass Based on Logarithmic Strain. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1191897
Modern Language Association (MLA)
Zhang, Qiang…[et al.]. Elastoplastic Analysis of Circular Openings in Elasto-Brittle-Plastic Rock Mass Based on Logarithmic Strain. Mathematical Problems in Engineering No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1191897
American Medical Association (AMA)
Zhang, Qiang& Li, Cheng& Min, Ming& Jiang, Binsong& Yu, Li-yuan. Elastoplastic Analysis of Circular Openings in Elasto-Brittle-Plastic Rock Mass Based on Logarithmic Strain. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1191897
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1191897