A unified hardening/softening elastoplastic model for rocks undergoing brittle-ductile transition with strength-mapping and fractional plastic flow rule

Tang, Yaolan; Sun, Yifei; Zhu, Yimo; Zhang, Chunshun; Li, Jianchun

doi:10.1016/j.compgeo.2024.106501

Computers and Geotechnics

2024

DOI: 10.1016/j.compgeo.2024.106501

|View full text |Cite

A unified hardening/softening elastoplastic model for rocks undergoing brittle-ductile transition with strength-mapping and fractional plastic flow rule

Yaolan Tang,

Yifei Sun,

Yimo Zhu

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article3

Relationship

Self Cite0

Independent3

Authors

Journals

Cited by 3 publications

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Three-dimensional elastoplastic constitutive model for cement stone based on fractional flow rule

Liu,

Xu,

Xiao

et al. 2024

Geomech. Geophys. Geo-energ. Geo-resour.

View full text Add to dashboard Cite

Three-dimensional elastoplastic constitutive model for cement stone based on fractional flow rule

Liu,

Xu,

Xiao

et al. 2024

Geomech. Geophys. Geo-energ. Geo-resour.

View full text Add to dashboard Cite

An energy-driven crushing-plasticity coupling model for grain crushing in porous rocks

Tang,

Li,

Wang

et al. 2024

International Journal of Rock Mechanics and Mining Sciences

View full text Add to dashboard Cite

Modeling Brittle-to-Ductile Transitions in Rock Masses: Integrating the Geological Strength Index with the Hoek–Brown Criterion

Vásárhelyi,

Narimani,

Davarpanah

et al. 2024

Applied Mechanics

View full text Add to dashboard Cite

Many studies focus on brittle–ductile transition stress in intact rocks; however, in real life, we deal with rock mass which contains many discontinuities. To fill this gap, this research focuses on the brittle–ductile transition stress of rock mass by considering the influence of different Geological Strength Index (GSI) values on the brittle–ductile transition stress of rock mass. In other words, the Hoek–Brown failure criteria for rock mass were reformulated mathematically including the ductility parameter (d), which is defined as the ratio of differential stress to minor stress. Then, the results were analyzed and plotted between σ3*σc and GSI, considering different (d) and Hoek–Brown material constant (mi) values. The brittle–ductile transition stress, σ3*, was determined by intersecting the Hoek–Brown failure envelope with Mogi’s line, with ductility parameters d ranging from 3.4 (silicate rocks) to 5.0 (carbonate rocks). Numerical solutions were derived for σ3*σc as a function of GSI using Matlab, and the results were fitted with an exponential model. The analysis revealed an exponential relationship between σ3*σc and GSI for values above 32, with accuracy better than 3%. Increased ductility reduces rock mass strength, with higher d values leading to lower σ3*σc. The diminishing returns in confinement strength at higher GSI values suggest that rock masses with higher GSI can sustain more confinement but with reduced effectiveness as GSI increases. These findings provide a framework for predicting brittle–ductile transitions in rock engineering.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

A unified hardening/softening elastoplastic model for rocks undergoing brittle-ductile transition with strength-mapping and fractional plastic flow rule

Cited by 3 publications

References 44 publications

Three-dimensional elastoplastic constitutive model for cement stone based on fractional flow rule

Three-dimensional elastoplastic constitutive model for cement stone based on fractional flow rule

An energy-driven crushing-plasticity coupling model for grain crushing in porous rocks

Modeling Brittle-to-Ductile Transitions in Rock Masses: Integrating the Geological Strength Index with the Hoek–Brown Criterion

Contact Info

Product

Resources

About