A modified model for calculating crack tip opening displacement (CTOD) considering fracture process zone (FPZ) in rock
Sign Up to like & getrecommendations! Published in 2024 at "Geomechanics and Geophysics for Geo-Energy and Geo-Resources"
DOI: 10.1007/s40948-024-00779-5
Abstract: A new CTOD calculation method is investigated in this study, considering the FPZ and the effective Young’s modulus. The calculated CTOD values from four theoretical models are compared with the measured CTOD values from the… read more here.
Keywords: plastic zone; fpz; model; ctod ... See more keywords
Physically short fatigue crack growth from notch described by plasticity-corrected stress intensity factor
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Mechanical Sciences"
DOI: 10.1016/j.ijmecsci.2020.105544
Abstract: Abstract When a physically short fatigue crack propagates from a notch root, the crack growth rate shows a “V-shaped” behavior; i.e., the rate firstly decreases and then increases as the crack propagates. In this study,… read more here.
Keywords: fatigue crack; intensity factor; plastic zone; stress intensity ... See more keywords
Plastic zone evolution during fatigue crack growth: Digital image correlation coupled with finite elements method
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Solids and Structures"
DOI: 10.1016/j.ijsolstr.2019.04.032
Abstract: Abstract Nonlinearities effects at the crack tip, due to the elastic-plastic material behavior, impact the crack growth rate and path. This paper is devoted to the study of the plastic zone evolution in the crack… read more here.
Keywords: crack; crack growth; plastic zone; evolution ... See more keywords
Theoretical model of the plastic zone at the I-mode crack tip in dentin
Sign Up to like & getrecommendations! Published in 2017 at "Scripta Materialia"
DOI: 10.1016/j.scriptamat.2017.02.007
Abstract: Abstract Possible mechanisms of inelastic deformation at the I-mode crack tip in dentin are theoretically studied. We consider the relative shear of collagen fibers in their nodes without breaking intermolecular bonds, the detachment of collagen… read more here.
Keywords: tip dentin; plastic zone; crack tip; mode crack ... See more keywords
Notch tip plastic zone determination by extending Irwin’s model
Sign Up to like & getrecommendations! Published in 2020 at "Theoretical and Applied Fracture Mechanics"
DOI: 10.1016/j.tafmec.2020.102643
Abstract: Abstract With the aid of some explicit formulas of the elastic stress fields at the neighborhood of U- and blunt V-shaped notches and also using the Tresca and Von-Mises yield criteria, the plastic zone size… read more here.
Keywords: plastic zone; zone; extending irwin; irwin model ... See more keywords
New algorithm for optimised fitting of DIC data to crack tip plastic zone using the CJP model
Sign Up to like & getrecommendations! Published in 2021 at "Theoretical and Applied Fracture Mechanics"
DOI: 10.1016/j.tafmec.2021.102950
Abstract: Abstract The work presented in this paper provides guidance in optimally determining the appropriate fitting region used in digital image correlation (DIC) when fitting a crack tip field model to DIC data. In this work,… read more here.
Keywords: crack; crack tip; model; plastic zone ... See more keywords
Numerical Modeling of Fracture Height Propagation in Multilayer Formations Considering the Plastic Zone and Induced Stress
Sign Up to like & getrecommendations! Published in 2022 at "ACS Omega"
DOI: 10.1021/acsomega.2c01131
Abstract: Hydraulic fracturing and acid fracturing are very effective stimulation technologies and are widely used in unconventional reservoir development. Fracture height, as an essential parameter to describe the geometric size of a fracture, is not only… read more here.
Keywords: fracture; growth; plastic zone; fracture height ... See more keywords
Spatial deformation prediction method of fractured rock tunnel based on quantified GSI and its application
Sign Up to like & getrecommendations! Published in 2024 at "Scientific Reports"
DOI: 10.1038/s41598-024-78005-1
Abstract: Determining rock mass mechanical parameters and accurately predicting tunnel deformation during tunnel construction remain challenging tasks. This study introduces a novel approach to calculate the Geological Strength Index by integrating indoor rock mechanics tests with… read more here.
Keywords: fractured rock; plastic zone; deformation; rock tunnel ... See more keywords
A preliminary study on dynamic response of cold-region tunnel systems considering the frozen soil in plastic zone
Sign Up to like & getrecommendations! Published in 2025 at "Scientific Reports"
DOI: 10.1038/s41598-025-89674-x
Abstract: The elasto-plastic dynamic response of tunnels surrounded by frozen soil under loads applied to the tunnel invert is investigated in this study. Special attention is paid to the frozen soil in plastic zones around the… read more here.
Keywords: dynamic response; soil; plastic zone; frozen soil ... See more keywords
Influence of principal stress orientation on stress distribution and plastic zone evolution of rock surrounding tunnels
Sign Up to like & getrecommendations! Published in 2024 at "Physics of Fluids"
DOI: 10.1063/5.0187253
Abstract: During the excavation of tunnels, the principal stress orientation changes, with a significant impact on the stress distribution, mechanical properties, and plastic zone evolution of rocks surrounding tunnels, causing severe deformation control, and monitoring problems… read more here.
Keywords: stress orientation; stress; plastic zone; principal stress ... See more keywords
Deformation and Failure Mechanism of Surrounding Rock in Mining-Influenced Roadway and the Control Technology
Sign Up to like & getrecommendations! Published in 2021 at "Shock and Vibration"
DOI: 10.1155/2021/5588314
Abstract: Aiming at the problem of surrounding rock deformation and failure of mining roadway and its control, a mechanical model of the circular roadway under the mining environment is established, and the implicit equation of the… read more here.
Keywords: mining; plastic zone; roadway; surrounding rock ... See more keywords