Results 81 to 90 of about 13,656,626 (360)

Stability influence factors analysis and construction of a deep beam anchorage structure in roadway roof

open access: yesInternational Journal of Mining Science and Technology, 2018
Deep beam anchorage structures based on spatial distribution analysis of the cable prestressed field have been proposed for roadway roof support. Stability and other factors that influence deep beam structures are studied in this paper using mechanical ...
Xie Shengrong   +6 more
doaj   +1 more source

Nuclear structure - The future with radioactive beams

open access: yesJournal of Research of the National Institute of Standards and Technology, 2000
Some examples of new phenomena expected at extreme values of neutron and proton number are discussed, including soft dipole modes and neutron-proton pairing. First results on the N = Z nucleus (62)Ga are presented in the context of the competition between T = 0 and 1 states in odd-odd, self-conjugate nuclei.
openaire   +3 more sources

From Nature to Engineering: Mortar Volume and Interfacial Mechanics in Bioinspired Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Inspired by natural armors like nacre, this study explores how varying the volume fraction of the soft mortar layer impacts the interfacial strength and toughness of bioinspired ceramics. Experimental and computational analysis reveals that higher mortar volumes increase energy dissipation but reduce interfacial stiffness, offering insights for ...
Ehsan Azad   +4 more
wiley   +1 more source

High-gradient two-beam accelerator structure

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2010
A novel cavity structure is described that could be the basis for a two-beam, high-gradient, accelerator. Versions of the structure could be used for acceleration of beams of electrons, positrons, muons, protons, or heavier ions; with either electron or ...
S. Yu Kazakov   +3 more
doaj   +1 more source

Vibration Suppression of a Large Beam Structure Using Tuned Mass Damper and Eddy Current Damping

open access: yes, 2014
For a few decades, various methods to suppress the vibrations of structures have been proposed and exploited. These include passive methods using constrained layer damping (CLD) and active methods using smart materials. However, applying these methods to
J. Bae   +4 more
semanticscholar   +1 more source

Influence of a Standard Heat Treatment on the Microstructure and Properties of Inconel X‐750 Produced by Laser Powder Bed Fusion

open access: yesAdvanced Engineering Materials, EarlyView.
Ni‐base superalloys produced using additive manufacturing (AM) have a different response to heat treatments when compared to their conventional counterparts. Due to such unpredictability, various alloys with industrial interest are currently overlooked in most prior AM research.
Guilherme Maziero Volpato   +6 more
wiley   +1 more source

Hybrid Precoding Based on Monopulse Ratio for Millimeter Wave Systems With Limited Feedback

open access: yesIEEE Access, 2020
Multiuser hybrid precoding in 5G NR mmWave communication system faces significant challenges such as establishing accurate directional radio links and maintaining links for mobile stations (MSs) moving in outdoor environments.
Hoil Kim   +2 more
doaj   +1 more source

Model Reduction Technique Tailored to the Dynamic Analysis of a Beam Structure under a Moving Load

open access: yes, 2014
This study presents a technique that uses a model reduction method for the dynamic response analysis of a beam structure to a moving load, which can be modeled either as a moving point force or as a moving body.
Yuanchang Chen   +2 more
semanticscholar   +1 more source

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach   +6 more
wiley   +1 more source

INFORMATIONAL ENTROPY IN SIMULATION OF ONE-DIMENSIONAL RANDOM FIELDS

open access: yesTASK Quarterly, 2002
The entropy H of a continuous distribution with probability density function f(•) is defined as a function of the number of nodes (n) in a one-dimensional scalar random field.
SZYMON OPOKA, HENRYK WALUKIEWICZ
doaj  

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