Results 71 to 80 of about 27,123 (217)

Spherical Jeans analysis for dark matter indirect detection in dwarf spheroidal galaxies - Impact of physical parameters and triaxiality [PDF]

, 2014
Dwarf spheroidal (dSph) galaxies are among the most promising targets for the indirect detection of dark matter (DM) from annihilation and/or decay products. Empirical estimates of their DM content - and hence the magnitudes of expected signals - rely on
Bonnivard, V., Combet, C., Maurin, D., Walker, M. G.   +3 more
core   +3 more sources

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Wavelet Energy Evolution Characteristics of Acoustic Emission Signal under True-Triaxial Loading during the Rockburst Test

Applied Sciences, 2022
The rockburst simulation test is conducted by utilizing a mineral-containing marble specimen. The loading condition is set to the three directions, each loading on five surfaces except for a single free surface.
Chuanyu Hu, Fuding Mei, Wakeel Hussain
doaj   +1 more source

Loss of halo triaxiality due to bar formation [PDF]

, 2010
Cosmological N-body simulations indicate that the dark matter haloes of galaxies should be generally triaxial. Yet, the presence of a baryonic disc is believed to alter the shape of the haloes.
Allgood, Athanassoula, Athanassoula, Athanassoula, Athanassoula, Athanassoula, Athanassoula, Athanassoula, Athanassoula, Athanassoula, Bailin, Bailin, Bailin, Bellovary, Berentzen, Berentzen, Binney, Cole, Colín, Combes, Combes, Curir, Debattista, Debattista, Debattista, Dehnen, Dehnen, Dubinski, E. Athanassoula, Fasano, Franx, Frenk, Gadotti, Gerhard, Hayashi, Heller, Hernquist, Holley-Bockelmann, Jing, Jog, Kazantzidis, Lambas, Maciejewski, Maciejewski, Martinez-Valpuesta, Martinez-Valpuesta, Novak, O'Neill, Raha, Rix, Rodionov, Rubens E. G. Machado, Ryden, Ryden, Sellwood, Tissera, Trachternach, Valluri, Villa-Vargas, Warren, Widrow   +60 more
core   +2 more sources

Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway

Energy Science &Engineering, EarlyView.
Based on deformation law of crossing layer drilling superimposed floor roadway, low dip angle drilling is particularly susceptible to complications such as borehole blockage and collapse. ABSTRACT Floor extraction roadway crossing layer drilling is a pivotal strategy for gas control in areas prone to coal and gas outbursts.
Xiao Liu, Bo Li, Jiawei Xie, Xiaoming Ni, Shaoren Wei, Chengtao Yang, Yubo Zhang, Haixiao Lin, Wei Zhao, Tao Wang   +9 more
wiley   +1 more source

Modified true triaxial Hoek-Brown criterion considering intermediate principal stress effect

Meitan kexue jishu
In order to improve the Hoek-Brown strength criterion not considering the influence of intermediate principal stress on rock strength, the evolutions of rock strength were investigated according to the results of the rock true triaxial compression test ...
Yapeng LI, Xiaosuo WU, Qiang ZHANG, Binsong JIANG   +3 more
doaj   +1 more source

Current situations, advantages/disadvantages and future developments of resilient deformation characterizations of unbound granular material: A state-of-the-art review

Journal of Traffic and Transportation Engineering (English ed. Online), 2023
A state-of-the-art review was delivered in the manuscript to analyze the current situations and the advantages/disadvantages of resilient deformation related issues to the unbound granular material (UGM), including testing methods, influencing factors ...
Shaohui Li, Peiwen Hao
doaj   +1 more source

Capturing Complex Rate‐Dependent Behaviors of Saturated Clays: A Fractional Consistency Kinematic Hardening Viscoplastic Approach

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Saturated high plasticity clays show complex nonlinear, rate‐dependent, and hysteresis behaviors under non‐monotonic stress paths, requiring advanced mathematical constitutive equations for accurate description. Taking into account the inherent advantages of kinematic hardening mechanisms in simulating complex stress histories, this paper ...
Wei Cheng, Zhen‐Yu Yin
wiley   +1 more source

Elastoplasticity Informed Kolmogorov–Arnold Networks Using Chebyshev Polynomials

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Multilayer perceptron (MLP) networks are predominantly used to develop data‐driven constitutive models for granular materials. They offer a compelling alternative to traditional physics‐based constitutive models in predicting non‐linear responses of these materials, for example, elastoplasticity, under various loading conditions. To attain the
Farinaz Mostajeran, Salah A. Faroughi
wiley   +1 more source

Deformation characteristics of coarse granular materials in large-scale true triaxial tests

Yantu gongcheng xuebao, 2019
The deformation behaviors of coarse granular materials under three-dimensional stress state are crucial to the settlement of earth-rockfill dams. A series of tests under constant minor principle stress and constant coefficient of intermediate principle ...
ZUO Yong-zhen 1, JIANG Jing-shan 2, 1, PAN Jia-jun 1, ZHAO Na 1, ZHOU Yue-feng 1
doaj   +1 more source