Results 21 to 30 of about 3,306,443 (202)
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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Energies, 2020 Factors leading to coal and gas outbursts are complicated, and the accuracy of predicting outbursts remains difficult to achieve. Therefore, coal and gas outburst risk are still a scientific challenge in the fields of mining, geology, safe engineering ...
Hongtao Liu, Linfeng Guo, Xidong Zhao
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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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, 2020 Fatigue strength analysis of critical components plays a vital role for ensuring structural integrity and operational reliability of major equipment.
Anteneh Tilahun Taddesse +3 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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Geofluids, 2021 Gas extraction is most commonly used to control gas disasters in coal mines. The distribution of the plastic zone around a borehole and the sealing quality are key factors affecting gas extraction. In this paper, the plastic zone was simulated by COMSOL,
Kuan Wu +4 more
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Lubrication in cold rolling: Elasto-plasto-hydrodynamic lubrication [PDF]
, 1993 A model has been developed with respect to hydrodynamic lubrication in cold rolling. The basic model describes the configuration of a rigid, perfectly plastic sheet rolled by a rigid work roll.
Lugt, P.M. +6 more
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