Results 251 to 260 of about 165,772 (278)

Compression field modeling of confined concrete

Structural Engineering and Mechanics, 2001
The three-dimensional behavior of confined concrete was investigated, including strength enhancement due to triaxial compressive stresses, lateral expansion, compression softening, cover spalling and post-peak ductility. A finite element program based on a nonlinear elasticity methodology was employed to evaluate the ability to model triaxial behavior ...
E. Montoya, F.J. Vecchio, S.A. Sheikh
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Numerical method for vorticity confinement in compressible flow

AIAA Journal, 2002
It is well known that modern computational fluid dynamics codes based on Eulerian descriptions do not adequately handle flows involving the convection of thin vortical layers. These layers often remain very thin and persist long distances without significant dissipation. Over the past decade, Steinhoff has introduced a class of methods, generally known
Guangchu Hu, Bernard Grossman, John Steinhoff   +2 more
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Analysis of soil compression curves from uniaxial confined compression tests

Geoderma, 2011
Abstract The compressive behaviour of soil, the compression curve, is typically expressed in a semi-logarithmic diagram in the relationship between the logarithm of applied stress, σ , and the void ratio, e . The compression curve yields three important soil compression properties: the swelling index, C s , the compression index, C c , and the ...
Keller, Thomas, Lamandé, Mathieu, Schjønning, Per, Dexter, AH   +3 more
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Tissue-scale anisotropy and compressibility of tendon in semi-confined compression tests

Journal of Biomechanics, 2015
In this study, porcine tendon tissue was tested with a dedicated semi-confined compression set-up that enables us to induce states of either fibrils in compression (mode I), tension (mode II) or at constant length (mode III), respectively. The results suggest that tendon tissue is compressible and demonstrates a significantly stiffer response in mode I
Markus, Böl, Alexander E, Ehret, Kay, Leichsenring, Michael, Ernst   +3 more
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Investigation of Vorticity Confinement in Compressible Flow

19th AIAA Computational Fluid Dynamics, 2009
To accurately capture vortical flow structures on relatively coarse grids, vorticity confinement might provide a cost-effective technique to counter the vorticity diffusing effect of numerical dissipation. Properties of the confinement term, added to the momentum equation, are studied analytically and numerically.
Ton, Tijmen, Koop, Arjen, Hoeijmakers, Harry, de Vries, Hein   +3 more
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Compressibility of 4He Liquid Confined in Nuclepore

Journal of Low Temperature Physics, 1998
Adding and removing 4 He from an experimental cell which contains the porous material Nuclepore results in capillary condensation, hysteresis and avalanches. The volume of liquid in the nearly cylindrical pores is monitored with a capacitance technique.
M. P. Lilly, R. B. Hallock
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Confined particle bed comminution under compressive loads

International Journal of Mineral Processing, 1996
Abstract Eight minerals and ores were comminuted batchwise in a piston-die press under defined conditions that eliminated geometrical effects of the particle bed. The influence of bed pressure, material hardness and feed size on energy absorption, energy utilization and product size distributions was investigated.
D.W. Fuerstenau, O. Gutsche, P.C. Kapur
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Uniaxial confined compression tests of cementitious materials

Construction and Building Materials, 2017
Abstract This paper aims at presenting the development of an experimental setup to perform confined compression tests of mortar and cement paste specimens at high pressures. The paper presents the effect of water/cement ratio (w/c) as well as the ratio of fine aggregate (sand) and its maximum grain size on the measured pressure – volumetric strain ...
Y.S. Karinski, D.Z. Yankelevsky, S. Zhutovsky, V.R. Feldgun   +3 more
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CFRP-CONFINED RUBBERISED CONCRETE UNDER MONOTONIC COMPRESSION

2023
This study aims to investigate the performance of rubberised concrete (RuC), confined with 2 layers of carbon fibre-reinforced polymer (CFRP). Cylindrical concrete specimens of a RuC mix and a conventional concrete mix were subjected to axial compression.
Skyrianou, I., Valiakou, E.I., Koutas, L.L., Papakonstantinou, C.G.   +3 more
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FRP-confined concrete under axial cyclic compression

Cement and Concrete Composites, 2006
Abstract One important application of fiber reinforced polymer (FRP) composites in construction is as FRP jackets to confine concrete in the seismic retrofit of reinforced concrete (RC) structures, as FRP confinement can enhance both the compressive strength and ultimate strain of concrete.
L. Lam, J.G. Teng, C.H. Cheung, Y. Xiao
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