Results 271 to 280 of about 131,723 (308)

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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Q Measurements under Confining Pressure

1979
Birch and Bancroft [1] demonstrated the feasibility of resonating a rock sample under hydrostatic pressure by vibrating the fully encapsulated samples in the torsional mode. They used this approach to obtain some Q data and extensive data on the modulus of rigidity as a function of pressure for a wide variety of rock samples.
B. R. Tittmann, H. Nadler, L. Ahlberg, E. R. Cohen   +3 more
openaire   +1 more source

Confinement of Photopolymerization and Solidification with Radiation Pressure

Journal of the American Chemical Society, 2011
Controlling chemical reactions within a small space is a significant issue in chemistry, and methods to induce reactions within a desired position have various potential applications. Here we demonstrate localized, efficient photopolymerization by radiation pressure.
Syoji, Ito, Yoshito, Tanaka, Hiroyuki, Yoshikawa, Yukihide, Ishibashi, Hiroshi, Miyasaka, Hiroshi, Masuhara   +5 more
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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 ...
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Quasi-static pressure calculations of confined explosions

Emerging Materials Research, 2015
Based on the state equation of ideal gas, thermodynamics and some laws of physical chemistry, a formula for the quasi-static pressure of a confined explosion was derived, when the chemical reactions and energy conversion of the detonation products were considered, and the expansion process of the detonation products was under constant entropy.
Wei Zhong, Zhou Tian, Hongliang Wang
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Liquefaction of sand under low confining pressure

Journal of Ocean University of Qingdao, 2003
Undrained behaviour of sand under low cell pressure was studied in static and cyclic triaxial tests. It was found that very loose sand liquefies under static loading with the relative density being a key parameter for the undrained behaviour of sand.
Yang Shaoli, Rolf Sandven, Lars Grande
openaire   +1 more source

Lateral Pressures in a Confined Porous Medium

Journal of Engineering Mechanics, 1984
M. Y. Corapcioglu, et al. has obtained expressions for deformations and stresses due to a single surface line load in a fluid saturated porous medium of finite width. The problem has a practical importance, especially in the case of elevated, unpaved roads which are supported by retaining walls on both sides. In a subsequent paper by Corapcioglu and A.
M. Yavuz Corapcioglu, Osman Borekci
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

Effect of pore pressure and confining pressure on fracture permeability

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1981
Abstract The effective pressure p e for measurements of fluid permeability 〈 k 〉 is shown to be ( p c − sp p ) where p c is confining pressure, p p is pore pressure, and s depends on the topography of the fracture surfaces and rock type.
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FEM Pressure Estimation of Confined Expansive Concrete

SP-179: Fourth CANMET/ACI/JCI Conference: Advances in Concrete Technology, 1998
The pressure of expansive concrete under confinement was investigated by the finite element method (FEM). It was found that it was possible to estimate the pressure of expansive concrete by simple elastic calculation using FEM where the elastic modulus was assumed to be 1-3 GPa, which was an order of magnitude lower than that of normal concrete ...
openaire   +1 more source