A Coupled Elastoplastic Damage Model for Clayey Rock and Its Numerical Implementation and Validation
Joint Authors
Jia, Shanpo
Wen, Caoxuan
Zhao, Zhenyun
Wu, Bisheng
Wu, Guojun
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-03-20
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
This paper presents a new constitutive model for describing the strain-hardening and strain-softening behaviors of clayey rock.
As the conventional Mohr-Coulomb (CMC) criterion has its limitation in the tensile shear region, a modified Mohr-Coulomb (MMC) criterion is proposed for clayey rock by considering the maximal tensile stress criterion.
Based on the results of triaxial tests, a coupled elastoplastic damage (EPD) model, in which the elastic and plastic damage laws are introduced to describe the nonlinear hardening and softening behaviors, respectively, is developed so as to fully describe the mechanical behavior of clayey rock.
Starting from the implicit Euler integration algorithm, the stress-strain constitutive relationships and their numerical formulations are deduced for finite element implementation in the commercial package ABAQUS where a user-defined material subroutine (UMAT) is provided for clayey rock.
Finally, the proposed model is used to simulate the triaxial tests and the results validate the proposed model and numerical implementation.
American Psychological Association (APA)
Jia, Shanpo& Zhao, Zhenyun& Wu, Guojun& Wu, Bisheng& Wen, Caoxuan. 2020. A Coupled Elastoplastic Damage Model for Clayey Rock and Its Numerical Implementation and Validation. Geofluids،Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1166585
Modern Language Association (MLA)
Jia, Shanpo…[et al.]. A Coupled Elastoplastic Damage Model for Clayey Rock and Its Numerical Implementation and Validation. Geofluids No. 2020 (2020), pp.1-14.
https://search.emarefa.net/detail/BIM-1166585
American Medical Association (AMA)
Jia, Shanpo& Zhao, Zhenyun& Wu, Guojun& Wu, Bisheng& Wen, Caoxuan. A Coupled Elastoplastic Damage Model for Clayey Rock and Its Numerical Implementation and Validation. Geofluids. 2020. Vol. 2020, no. 2020, pp.1-14.
https://search.emarefa.net/detail/BIM-1166585
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166585