Results 41 to 50 of about 31,992 (227)

Precession of Isolated Neutron Stars II: Magnetic Fields and Type II Superconductivity [PDF]

, 2002
We consider the physics of free precession of a rotating neutron star with an oblique magnetic field. We show that if the magnetic stresses are large enough, then there is no possibility of steady rotation, and precession is inevitable.
Wasserman, Ira
core   +4 more sources

Unveiling the three-dimensional structure of galaxy clusters: resolving the discrepancy between X-ray and lensing masses

, 2010
[Abridged] We present the first determination of the intrinsic three-dimensional shapes and the physical parameters of both dark matter (DM) and intra-cluster medium (ICM) in a triaxial galaxy cluster.
Andersson, Andrea Morandi, Arabadjis, Arnaud, Binney, Bradač, Clowe, Dahle, De Filippis, Ebeling, Gastaldello, Gnedin, Inagaki, Jing, Kaastra, Kelson, Kristian Pedersen, Lee, Lee, Lee, Lewis, Limousin, Makino, Marceau Limousin, Merritt, Moore, Navarro, Oguri, Peng, Riemer-Sørensen, Sand, Sand, Sand, Sarazin, Smith, Sommer-Larsen, Suto, Taylor, Tyson, Vikhlinin, Voevodkin, Yoshida, Zappacosta   +42 more
core   +7 more sources

Experimental Investigation on the Deformation, Strength, and Acoustic Emission Characteristics of Sandstone under True Triaxial Compression

Advances in Materials Science and Engineering, 2018
The study of deformation, strength, and other mechanical characteristics of sandstone under true triaxial compression is significant for understanding failure mechanisms in rock and evaluating the stability of underground structures.
Zhaolin Li, Lianguo Wang, Yinlong Lu, Wenshuai Li, Kai Wang   +4 more
doaj   +1 more source

Influences of True Triaxial Loading-Unloading Stress Paths on Mechanical Properties and Wave Velocity of Coal Samples subject to Risk of Rock Burst

Shock and Vibration, 2021
To study fracture evolution and peak stress in burst risk coal samples (BRCSs) under true triaxial loading and unloading conditions, experimental and numerical research was applied to BRCSs under true triaxial stress paths entailing “x-direction ...
Wei Shen, Guang-Jian Liu, Lin-Ming Dou, Si-Yuan Gong, Hu He   +4 more
doaj   +1 more source

A Three-Dimensional Constitutive Model for Rocks Based on a Strain-Dependent Elastic Modulus

Lithosphere, 2022
Our research group previously proposed a simple two-dimensional (2D) constitutive model for rocks to simulate not only the axial stress–axial strain relationship, but also the axial stress–lateral strain relationship, with few complicated equations ...
Z. Li, Y. Fujii, J. Kodama, D. Fukuda, A. B. N. Dassanayake, P. Sinkala   +5 more
doaj   +1 more source

Modeling the gravitational potential of a cosmological dark matter halo with stellar streams [PDF]

, 2016
Stellar streams result from the tidal disruption of satellites and star clusters as they orbit a host galaxy, and can be very sensitive probes of the gravitational potential of the host system. We select and study narrow stellar streams formed in a Milky-
Hartke, Johanna, Helmi, Amina, Sanderson, Robyn E.   +2 more
core   +2 more sources

Experimental study of mechanical properties of highly-stressed rocks under true triaxial unloading conditions with different unloading directions

Shuiwen dizhi gongcheng dizhi
During the excavation process of deep rock masses, the surrounding rock stress field forms alternating zones of stress increase (loading zones) and stress decrease (unloading zones) near the excavation surface, which can easily trigger instability and ...
Qian XIANG, Ke WANG, Lei WENG, Weijun YOU, Zhaofei CHU, Zeyu LI   +5 more
doaj   +1 more source

Railway ballast anisotropy testing via true triaxial apparatus [PDF]

Transportation Geotechnics, 2020
This paper aims to demonstrate the anisotropic behaviour of railway ballast via true-triaxial tests. To do so, a novel, large-scale, true-triaxial testing apparatus (GeoTT) is designed and constructed. It consists of six hydraulic actuators, designed to apply a distributed stress to large granular cubic test specimens with dimensions: 500 mm × 500 m ...
Yu ZL, Connolly DP, Woodward PK, Laghrouche O, Tutumluer E   +4 more
openaire   +3 more sources

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

, 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, Bacon, Bahcall, Bardeau, Bardeau, Bartelmann, Bett, Bradac, Bradac, Broadhurst, Broadhurst, Clowe, Clowe, Clowe, Clowe, Corless, Corless, Corless, Dahle, Diego, Dodelson, Douglas Clowe, Evrard, Gavazzi, Halkola, Hoekstra, Jing, Jullo, Kassiola, King, King, King, Kneib, Lemze, Lemze, Leonard, Lewis, Limousin, Lindsay J. King, Majerowicz, Marshall, Medezinski, Meneghetti, Miralda-Escude, Mobasher, Navarro, Neto, Oguri, Oguri, Oguri, Reiprich, Reiprich, Russell, Sanders, Schmidt, Schneider, Schramm, Seitz, Shaw, Smith, Umetsu, Virginia L. Corless, Wambsganss, Xue, Zhang, Łokas   +65 more
core   +1 more source

Study on Failure Difference of Hard Rock Based on a Comparison Between the Conventional Triaxial Test and True Triaxial Test

Frontiers in Earth Science, 2022
The study on the failure difference of deep hard rock based on the comparison between conventional and true triaxial tests can help us better understand the fracture processes and failure characteristics of the deep rock mass.
Guoqiang Zheng, Yonghui Tang, Yan Zhang, Yaohui Gao, Guoqiang Zhu, Meiben Gao, Meiben Gao, Junqian Ren, Kezhu Chen, Jicheng Sun   +9 more
doaj   +1 more source