Results 1 to 10 of about 5,144,321 (345)
Effect of Strain Hardening on Increase in Collapse Pressure during the Manufacture of ERW Pipe
Applied Sciences, 2020 Plastic deformation during the manufacture process of electric resistance welded (ERW) pipe determines the stress–strain relationship of the steel pipe, which affects the collapse pressure of offshore pipelines.
Seong-Wook Han +3 more
doaj +2 more sources
Singularities in gravitational collapse with radial pressure [PDF]
General Relativity and Gravitation, 2001 We analyze spherical dust collapse with non-vanishing radial pressure, $\Pi$, and vanishing tangential stresses. Considering a barotropic equation of state, $\Pi=\gamma\rho$, we obtain an analytical solution in closed form---which is exact for $\gamma=-1,
A. Ori +32 more
core +5 more sources
Cosmic censorship and spherical gravitational collapse with tangential pressure [PDF]
Classical and Quantum Gravity, 1997 We study the spherical gravitational collapse of a compact object under the approximation that the radial pressure is identically zero, and the tangential pressure is related to the density by a linear equation of state.
Bondi H +10 more
core +4 more sources
Collapse of Corroded Pipelines under Combined Tension and External Pressure. [PDF]
PLoS ONE, 2016 In this work, collapse of corroded pipeline under combined external pressure and tension is investigated through numerical method. Axially uniform corrosion with symmetric imperfections is firstly considered.
Hao Ye, Sunting Yan, Zhijiang Jin
doaj +2 more sources
Magnetic Collapse and the Behavior of Transition Metal Oxides at High Pressure [PDF]
, 2016 We report a detail theoretical study of the electronic structure and phase stability of transition metal oxides MnO, FeO, CoO, and NiO in their paramagnetic cubic B1 structure by employing dynamical mean-field theory of correlated electrons combined with
Abrikosov, I. A. +3 more
core +3 more sources
Collapse of critical nematic fluctuations in FeSe under pressure [PDF]
Physical Review Letters, 2018 We report the evolution of the electronic nematic susceptibility in FeSe via Raman scattering as a function of hydrostatic pressure up to 5.8 GPa where the superconducting transition temperature $T_{c}$ reaches its maximum.
Cazayous, Maximilien +10 more
core +8 more sources
Pressure-induced collapse of ferromagnetism in nickel [PDF]
Physical Review B, 2022 Transition metals, Fe, Co and Ni, are the canonical systems for studying the effect of external perturbations on ferromagnetism. Among these, Ni stands out as it undergoes no structural phase transition under pressure. Here we have investigated the long-debated issue of pressure-induced magnetisation drop in Ni from first-principles.
A. Ahad, M. S. Bahramy
openaire +3 more sources
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023 Three different types anisotropic strength are applied to fit the experimental strength data. Pariseau’s model captures reduced strength with varying moisture content better. The influence of compliance incremental tensor induced by fractures on stresses
Fei Gao +4 more
semanticscholar +1 more source
Prediction of Collapse Pressure of Submarine Pipelines in A Wide Range of Diameter-Thickness Ratio
China Ocean engineering, 2022 Submarine pipelines play an important role in offshore oil and gas development. A touchy issue in pipeline design and application is how to avoid the local collapse of pipelines under external pressure. The pipe diameter-thickness ratio D/t is one of the
Wanzhi Xu +5 more
semanticscholar +1 more source
Energies, 2022 The shale oil horizontal wells in the Songliao Basin are affected by a lack of mature theories, technologies and experiences in the direction of wellbore stability. Wellbore collapse may occur, and in severe cases, the wellbore may be scrapped, resulting
Shibin Li +6 more
doaj +1 more source