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Analytical solution of the stress field and plastic zone at the tip of a closed crack
Frontiers in Earth ScienceThe investigation of stress field and plastic zone distribution at the closed crack tip provides a fundamental basis for failure analysis and life prediction of geotechnical materials. Closed crack is a common crack in geotechnical materials.
Guanzhong Wu, Wensong Wang, Shaochi Peng
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Mode I crack tip fields: strain gradient plasticity theory versus J2 flow theory
, 2019 The mode I crack tip asymptotic response of a solid characterised by strain gradient plasticity is investigated. It is found that elastic strains dominate plastic strains near the crack tip, and thus the Cauchy stress and the strain state are given ...
Fleck, Norman A. +1 more
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Meitan xuebaoWith the increasing depth of coal mining, the stability control of surrounding rock in deep roadway has become one of major problems in the mining field, and the effect of surrounding rock control in deep roadway is directly related to the safe ...
Weijun WANG +3 more
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AIP Advances, 2018 An elastic-plastic analysis of the mode III crack surface vicinity was performed in an infinitely wide elastic-perfectly plastic plate, in which a pair of anti-plane forces applied at an arbitrary point on the crack surface.
Feng Huang +7 more
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Advances in Civil Engineering, 2021 The formation and expansion of the plastic zone is always accompanied by the deformation and failure of the roadway-surrounding rock. Based on elastoplastic theory, this paper considers the gas pressure parameters and uses the Mohr–Coulomb strength ...
Chao Yuan +3 more
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Applied Sciences, 2022 A three-axis experimental simulation model was established for a roadway with layered surrounding rock by a 20 MPa true triaxial analog simulation equipment, and the corresponding layered surrounding rock numerical simulation model was established by ...
Jiaren Chen +5 more
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Experimental methodology for the quantification of crack tip plastic zone and shape from the analysis of displacement fields [PDF]
Fracture and Structural Integrity, 2017 The current work presents a novel methodology for the experimental quantification of the crack tip plastic zone during fatigue crack growth. This methodology is based on the application of yield criteria to estimate the area and the shape of the plastic ...
J.M. Vasco-Olmo +4 more
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International Journal of Solids and Structures, 2019 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 tip region.
J. Hosdez +8 more
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Localization Analysis of an Energy-Based Fourth-Order Gradient Plasticity Model
, 2015 The purpose of this paper is to provide analytical and numerical solutions of the formation and evolution of the localized plastic zone in a uniaxially loaded bar with variable cross-sectional area.
Jirásek, Milan +2 more
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矿业科学学报, 2019 Based on the special lateral pressure coefficients of 1,the radius of surrounding rock plastic zone obtained by approximate implicit method has a large theoretical error contrasted with the corresponding analytical solution of the mature axisymmetric ...
Dong Hailong, Gao Quanchen
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