Results 71 to 80 of about 14,344 (210)

The formation of CDM haloes II: collapse time and tides [PDF]

, 2014
We use two cosmological simulations of structure formation in the LambdaCDM scenario to study the evolutionary histories of dark-matter haloes and to characterize the Lagrangian regions from which they form. We focus on haloes identified at redshift z_id=
Borzyszkowski, Mikolaj, Ludlow, Aaron D., Porciani, Cristiano   +2 more
core   +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

A multifunctional shear apparatus for rocks subjected to true triaxial stress and high temperature in real-time

Journal of Rock Mechanics and Geotechnical Engineering
Deep engineering disasters, such as rockbursts and collapses, are more related to the shear slip of rock joints. A novel multifunctional device was developed to study the shear failure mechanism in rocks. Using this device, the complete shear–deformation
Jun Zhao, Xia-Ting Feng, Jia-Rong Wang, Liang Hu, Yue Guo   +4 more
doaj   +1 more source

Properties of quasi-relaxed stellar systems in an external tidal field

, 2009
In a previous paper, we have constructed a family of self-consistent triaxial models of quasi-relaxed stellar systems, shaped by the tidal field of the hosting galaxy, as an extension of the well-known spherical King models.
Bertin, G., Varri, A. L.
core   +1 more source

Constitutive modeling of steel-polypropylene hybrid fiber reinforced concrete using a non-associated plasticity and its numerical implementation [PDF]

, 2014
This paper presents a non-associated plasticity-based constitutive model for hybrid steel–polypropylene fiber reinforced concrete (HFRC) materials in an attempt to characterize the stress–strain responses under multiaxial loading scenarios. Together with
Chi, Y, Xu, L, Yu, H-S
core   +1 more source

Numerical Investigation of the Influence of Interparticle Cohesion During the Shear Behavior of Granular Soil

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Interparticle cohesive forces play a crucial role in governing the shear behavior of many soils; however, quantifying this effect remains challenging due to limited microscopic insights available from laboratory experiments. In this context, the current study aims to investigate the influence of microscale cohesion on the shear response using ...
Thao Doan, Buddhima Indraratna, Thanh T. Nguyen, Cholachat Rujikiatkamjorn   +3 more
wiley   +1 more source

Fiber Bragg Grating Force Sensors for Minimally Invasive Surgery: State of the Art, Challenges, and Opportunities

SmartBot, EarlyView.
This article reviews the application of fiber Bragg grating (FBG) technology for precise force sensing in minimally invasive surgery. It outlines the fundamental working principles and algorithms used to interpret sensor data. The text surveys clinical applications across various medical fields, such as ophthalmology and vascular intervention (Table of
Shiyuan Dong, Tianqi Huang, Lingyu Chen, Shucong Yin, Qing Chang, Dingpei Han, Yangxi Li, Boyu Zhang, Hongen Liao, Fang Chen   +9 more
wiley   +1 more source

Effect of Double Annealing on the Microstructure and Mechanical Properties of a Medium Manganese Steel

steel research international, EarlyView.
A double intercritical annealing strategy is proposed to tailor the multiphase microstructure and mechanical response of a medium‐Mn steel. The treatment produces an ultrafine mixture of ferrite, martensite and multiple austenite populations with graded thermal and mechanical stability, formed through austenite reversion and controlled retransformation.
Mattia Franceschi, Jose A. Jimenez, Carlos Garcia‐Mateo, Radhakanta Rana   +3 more
wiley   +1 more source

Dissipationless Mergers of Elliptical Galaxies and the Evolution of the Fundamental Plane

, 2005
We carry out numerical simulations of dissipationless major mergers of elliptical galaxies using initial galaxy models that consist of a dark matter halo and a stellar bulge with properties consistent with the observed fundamental plane.
Alam, Bailin, Barnes, Barnes, Benson, Bernardi, Bernardi, Binney, Blanton, Blumenthal, Borriello, Boylan-Kolchin, Burkert, Capelato, Cappellari, Chung-Pei Ma, Ciotti, Cole, Dantas, de Vaucouleurs, Dehnen, Djorgovski, Dressler, Dubinski, Dubinski, Eliot Quataert, Faber, Faber, Ferrarese, Gao, Gebhardt, Gerhard, Gnedin, González-García, Graham, Hernquist, Häring, Jing, Jorgensen, Kauffmann, Kazantzidis, Kazantzidis, Khochfar, Khochfar, Magorrian, Michael Boylan-Kolchin, Moore, Naab, Navarro, Nipoti, Padmanabhan, Pahre, Pahre, Rusin, Seljak, Sersic, Shen, Springel, Springel, Springel, Steinmetz, Toomre, Tormen, Trager, Tremaine, Treu, van Dokkum, Vincent, Zentner   +68 more
core   +1 more source

Dark matter response to galaxy formation [PDF]

, 2010
We have resimulated the six galaxy-sized haloes of the Aquarius Project including metal-dependent cooling, star formation and supernova feedback. This allows us to study not only how dark matter haloes respond to galaxy formation, but also how this ...
Abadi, Ascasibar, Barnes, Barnes, Bertschinger, Blumenthal, Boylan-Kolchin, Cecilia Scannapieco, Debattista, Diemand, Dubinski, Dubinski, Dutton, Eggen, Einasto, Evrard, Flores, Frenk, Gao, Gnedin, Hansen, Hayashi, Helmi, Jing, Katz, Kazantzidis, Koopmans, Kuijken, McGaugh, Mo, Moore, Mosconi, Navarro, Navarro, Navarro, Navarro, Oñorbe, Patricia B. Tissera, Pedrosa, Pedrosa, Power, Rasia, Romano-Díaz, Sackett, Salucci, Sand, Scannapieco, Scannapieco, Scannapieco, Scannapieco, Sellwood, Simon D. M. White, Springel, Springel, Susana Pedrosa, Taylor, Tissera, Vass, Vogelsberger, Weijmans, Young, Zeldovich   +61 more
core   +2 more sources