Results 221 to 230 of about 16,352 (264)

Plastic Bifurcation in the Triaxial Confining Pressure Test

Journal of Applied Mechanics, 2000
Bifurcations of a circular cylinder are studied, within the context of the triaxial confining pressure test, for pressure sensitive solids. Material response is modeled by large strain versions of flow and deformation theories of plasticity in conjunction with the Drucker-Prager solid.
Durban, D., Papanastasiou, Panos C., Durban, D., Papanastasiou, Panos C.   +3 more
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Structure and dynamics of water confined in a graphene nanochannel under gigapascal high pressure: dependence of friction on pressure and confinement

Physical Chemistry Chemical Physics, 2017
The friction coefficient at the water/graphene interface is dependent on the lateral pressure and nanochannel height under gigapascal high-pressure.
Lei Yang, Yanjie Guo, Dongfeng Diao
openaire   +2 more sources

Rock friction-effect of confining pressure, temperature, and pore pressure

pure and applied geophysics, 1978
This paper reviews many of the mechanical properties of faulted and jointed rock under pressure and temperature and in the presence of water. At low effective confining pressures (below about 1 kilobar), the friction strength is quite variable and depends on the frictional resistance between gouge particles or asperities and on the dilatancy of the ...
openaire   +1 more source

Deformation of Chalk Under Confining Pressure and Pore Pressure

Society of Petroleum Engineers Journal, 1981
Abstract Compression tests with and without pore pressure have been run on Danian and Austin chalks. The rocks yielded under increasing hydrostatic stress by pore collapse. The same effect was produced by holding a constant hydrostatic stress and reducing the pore pressure. This pore collapse reduced the permeability.
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Pressure confinement effect in MoS ₂ monolayers

Nanoscale, 2015
With ever increasing interest in layered materials, molybdenum disulfide has been widely investigated due to its unique optoelectronic properties. Pressure is an effective technique to tune the lattice and electronic structure of materials such that high pressure studies can disclose new structural and optical phenomena.
Fangfei, Li, Yalan, Yan, Bo, Han, Liang, Li, Xiaoli, Huang, Mingguang, Yao, Yuanbo, Gong, Xilian, Jin, Baoli, Liu, Chuanrui, Zhu, Qiang, Zhou, Tian, Cui   +11 more
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Confined high pressure discharge experiments

IEEE Transactions on Magnetics, 1989
Plasma jets created by a discharge of current density in the range of 20-200 kA/cm/sup 2/ were studied experimentally. Time-of-flight, spectroscopy, and X-ray imaging techniques were used to measure the velocity, temperature and the density of the plasma jet. These techniques were applied to the plasma of a free jet both in air and in vacuum, resulting
N. Spector, Z. Kaplan, A. Loeb, B. Brill, J. Levinson   +4 more
openaire   +1 more source

Effect of Isotropic Confining Pressure on Hydrostatic Pressure of Water in Unsaturated Soil

Science, 1962
A theory has been developed for the response of the pore-water pressure u w to pressure applied isotropically to unsaturated soil. The results indicate that the response is determined by two shrinkage characteristics of the soil.
P R, Day, W M, Forsythe
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Confining Pressure, Grain Angularity, and Liquefaction

Journal of Geotechnical Engineering, 1985
Substantial decrease in resistance to liquefaction is shown to occur with increase in confining pressure for a rounded and an angular sand having identical gradation. For a given increase in confining pressure, angular sand suffers a larger loss in resistance than rounded sand.
Yoginder P. Vaid, Jing C. Chern, Hadi Tumi   +2 more
openaire   +1 more source

Prediction of explosion pressures in confined spaces

Journal of Loss Prevention in the Process Industries, 1996
This paper outlines the basic features of a numerical explosion model that has been developed for predicting explosion pressures and flame speeds in confined geometries. The results and lessons learnt from the validation of the model against experimental data are presented, together with a discussion of the limitations of the model and areas where ...
D.K. Pritchard, D.J. Freeman, P.W. Guilbert   +2 more
openaire   +1 more source

Pressure fluctuations in an unstable confined jet

AIAA Journal, 1996
This note reports on a study of pressure fluctuations at the exit of a two-dimensional jet confined in a rectangular cavity.
Patricia Ern, Jose Eduardo Wesfreid
openaire   +1 more source