Results 1 to 10 of about 543,693 (304)
Evolution of plastic zone in surrounding rock of roadway within anisotropic stratum under complex in-situ stress [PDF]
Scientific ReportsDeep mining operates under complex high in-situ stress conditions where the inherent anisotropy of rock strata, caused by bedding planes and random joints.
Yunjiang Sun +8 more
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Study on the evolution law of the ‘Butterfly-type’ plastic zone in the surrounding rock of deep dynamic pressure roadway [PDF]
Scientific ReportsThe formation and development of plastic zone in the surrounding rock is the essence of large deformation damage to the surrounding rock in deep, highly stressed roadway.
Yiwen Liang +4 more
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Meitan kexue jishu, 2023 In order to study the boundary of plastic zone of surrounding rock of a roadway considering axial stress, based on Mohr-Coulomb criterion, the implicit equation of plastic zone boundary of surrounding rock of circular roadway considering axial stress is ...
Hongtao LIU +7 more
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Influence of Hardening on the Cyclic Plastic Zone Around Crack Tip in Pure Copper CT Specimens [PDF]
Journal of Stress Analysis, 2018 Under cyclic loading, the plastic zone becomes complicated during unloading. The energy-absorbing cyclic plastic zone is a stimulant for crack growth and can be a criterion for determining the damage around the fatigue crack tip.
R. Hosseini, R. Seifi
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Advances in Mechanical Engineering, 2023 Considering that the internal friction angle of the surrounding rock is not a constant but a function of the mean normal stress, and the unified strength theory (UST) is used as the plastic condition of the tunnel surrounding rock, the plastic zone of ...
Feng Gao, Shanqing Li
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Initiation Behavior of Microscopic Short Cracks in Weld Toe of Structural Steel Q345B
Metals, 2022 Aiming at the base metal (BM) zone, heat affected zone (HAZ) and fusion zone (FZ) of the weld, the tip plastic zone and initiation behavior of microscopic short cracks (MSCs) in the toe of cross-welded joints are studied. Based on the theory of crack tip
Lifu Cheng +3 more
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Rock and Soil Mechanics, 2022 To clarify the plastic law and hardening characteristics of deformation and failure of staggered zone under high in-situ stress unloading conditions with excavation in underground engineering, a series of triaxial tests under different confining ...
DUAN Shu-qian +4 more
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Evolution Characteristics of Plastic Zone in Jointed Rock Mass of High-Temperature Hydraulic Tunnel
Applied Sciences, 2023 The evolution characteristics and the extent of the plastic zone in rock mass can reflect the failure characteristics and destruction degree of a hydraulic tunnel.
Kangbin Li +3 more
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Role of plastic zone porosity and permeability in sand production in weak sandstone reservoirs
Underground Space, 2022 Sand production is often characterized as a two-stage process, in which material failure occurs near the cavity, leading to the formation of a plastic zone, from which particles are detached and transported out because of continuous hydrodynamic erosion ...
Ainash Shabdirova +2 more
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Учёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова, 2016 Carotid artery endarterectomy (KEAE) is a worldwide standard operation in revascularization of brain. KEAE methodology is wellknown, proven and used in many health care facilities.The aim of our examination was: 1) to study anatomic changes of plastic ...
K. M. Vakhitov
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