Results 31 to 40 of about 26,973 (231)

Mechanical properties and strength criterion of Zhanjiang structured clay in three-dimensional stress state

open access: yesRock and Soil Mechanics, 2021
In order to investigate the mechanical properties of Zhanjiang structured clay in the three-dimensional stress state and the influence of structure on its strength criterion, a series of undrained true triaxial tests of different intermediate principal ...
LIU Bing-heng   +3 more
doaj   +1 more source

Intrinsic Shapes of Molecular Cloud Cores [PDF]

open access: yes, 2001
We conduct an analysis of the shapes of molecular cloud cores using recently compiled catalogs of observed axis ratios of individual cores mapped in ammonia or through optical selection.
Binney J.   +6 more
core   +3 more sources

Fluid-Solid Coupling Mechanism of Shale Hydraulic Fracture Propagation Based on True Triaxial Test and Numerical Analysis [PDF]

open access: yesLithosphere, 2023
Hydraulic fracture propagation has a great influence on reservoir reconstruction in shale gas exploitation. The study on mechanism of hydraulic fracture propagation is important.
Bohu Zhang   +4 more
doaj   +1 more source

Galaxy Clusters: Oblate or Prolate? [PDF]

open access: yes, 1999
It is now well known that a combined analysis of the Sunyaev-Zel'dovich (SZ) effect and the X-ray emission observations can be used to determine the angular diameter distance to galaxy clusters, from which the Hubble constant is derived.
Asantha R. Cooray   +23 more
core   +4 more sources

Spectral Statistics of the Triaxial Rigid Rotator: Semiclassical Origin of their Pathological Behavior [PDF]

open access: yes, 2003
In this paper we investigate the local and global spectral properties of the triaxial rigid rotator. We demonstrate that, for a fixed value of the total angular momentum, the energy spectrum can be divided into two sets of energy levels, whose classical ...
Manfredi, V. R.   +2 more
core   +2 more sources

A New Look at Massive Clusters: weak lensing constraints on the triaxial dark matter halos of Abell 1689, Abell 1835, & Abell 2204

open access: yes, 2008
Measuring the 3D distribution of mass on galaxy cluster scales is a crucial test of the LCDM model, providing constraints on the nature of dark matter. Recent work investigating mass distributions of individual galaxy clusters (e.g.
Andersson   +65 more
core   +1 more source

Experimental Investigation on the Influence of Depth on Rockburst Characteristics in Circular Tunnels

open access: yesSensors, 2022
To investigate the influence of depth on the rockburst of surrounding rock in a circular tunnel, true-triaxial tests at different depths were carried out on cubic granite specimens with a circular through-going hole.
Xuefeng Si, Kang Peng, Song Luo
doaj   +1 more source

True triaxial testing of geogrid for high speed railways [PDF]

open access: yesTransportation Geotechnics, 2019
This work describes a series of novel experimental tests to determine the potential of geogrids to confine granular layers within ballasted railway lines operating at speeds close to critical velocity. This is important because at low train speeds, vertical stresses are dominant, but when approaching critical velocity conditions, dynamic horizontal ...
Yu Z   +3 more
openaire   +3 more sources

Acoustic Emission b Value Characteristics of Granite under True Triaxial Stress

open access: yesMathematics, 2022
The acoustic emission b value is an important and widely used parameter for the early prediction of rock fractures. In this study, five groups of true triaxial compression tests were conducted on granite specimens to analyze changes in b value during the
Longjun Dong   +4 more
doaj   +1 more source

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