Results 11 to 20 of about 26,433 (157)

Creep Model and Experimental Verification of Sandstone under the Coupled Effect of Chemical Corrosion and Temperature

open access: yesApplied Sciences
The Nishihara creep model is an extremely effective method in the field of sandstone creep model research. However, the Nishihara creep model curve for sandstone under the marine environment (the coupled effect of chemical corrosion and temperature) does
Xia Xiu   +5 more
doaj   +3 more sources

Uniaxial creep characteristics and constitutive model of arkose sandstone with different moisture contents under repeated freeze thaw cycles [PDF]

open access: yesScientific Reports
To investigate the creep characteristics of water-containing slope rocks in high-cold regions, this study conducted indoor physical and mechanical tests on arkose sandstone specimens, with moisture content and freeze-thaw cycle number as test variables ...
Tian Chen   +5 more
doaj   +2 more sources

Creep constitutive model of strain energy density considering the whole process of creep deformation. [PDF]

open access: yesPLoS ONE
Aiming at the problem that the traditional creep model is difficult to reflect the characteristics of accelerated creep stage of rock, the influence of stress state on accelerated creep is fully considered, and a constitutive model which can describe ...
Yuemei Li
doaj   +2 more sources

Fractional creep model and experimental study of unsaturated silty clay in Fuyang

open access: yesFrontiers in Earth Science, 2023
Due to the long-term overdraft of groundwater in Fuyang, silty clay in this area has been in an unsaturated state for a long time, which caused ground subsidence and threatened the safety of engineering construction.
Daguo Wu   +5 more
doaj   +1 more source

Equivalent fatigue stress and non-linear constitutive model for fatigue of rock

open access: yesYantu gongcheng xuebao, 2021
The traditional damage model is insensitive to cycles of loading and unloading, and it is obviously inadequate for the characterization of fatigue deformation and failure of rock. Based on the creep and fatigue tests, the "homology" hypothesis of the two
TANG Xin 1, YU Jin 1, LIN Li-hua 2, GAO Hai-dong 3, LI Gang 3, LIN Zhi-chao 2
doaj   +1 more source

A nonlinear creep model for surrounding rocks of tunnels based on kinetic energy theorem

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2023
The initiating condition for the accelerated creep of rocks has caused difficulty in analyzing the whole creep process. Moreover, the existing Nishihara model has evident shortcomings in describing the accelerated creep characteristics of the ...
Wenbo Liu   +4 more
doaj   +1 more source

Research on Creep Model of Roadway Surrounding Rock Based on Variable Creep Parameters

open access: yesMeikuang Anquan, 2020
In order to study the creep behavior of surrounding rock of Huaying Coal Mine in Sichuan under different confining pressure characteristics, the triaxial creep test of sandstone was carried out by TAW-2000 test system.
LIU Changming, ZHANG Hong
doaj   +1 more source

Differentiation of human pluripotent stem cells to brain microvascular endothelial cell-like cells suitable to study immune cell interactions

open access: yesSTAR Protocols, 2021
Summary: We describe the extended endothelial cell culture method (EECM) for the differentiation of human pluripotent stem cells (hPSCs) into brain microvascular endothelial cell (BMEC)-like cells.
Hideaki Nishihara   +5 more
doaj   +1 more source

Deformation Prediction of Tunnel-Surrounding Rock Considering the Time Effect of the Viscosity Coefficient: A Case of an NATM-Excavated Tunnel

open access: yesFrontiers in Earth Science, 2022
Considering engineering problems such as complicated stress and the difficulty in controlling large deformation while a tunnel passes through a soft rock stratum, a theoretical prediction model of convergence deformation of tunnel-surrounding rock is ...
Da Hu   +5 more
doaj   +1 more source

Atomistic Dynamics of the Richtmyer-Meshkov Instability in Cylindrical and Planar Geometries [PDF]

open access: yes, 2006
We apply molecular dynamics (MD) simulations to study the evolution of the shock-driven Richtmyer-Meshkov instability (RMI) in the cylindrical and planar geometries.
Abarzhi, S. I.   +3 more
core   +1 more source

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