Results 81 to 90 of about 7,070,093 (355)

Covalent bonds are created by the drive of electron waves to lower their kinetic energy through expansion.

open access: yesJournal of Chemical Physics, 2014
An analysis based on the variation principle shows that in the molecules H2 (+), H2, B2, C2, N2, O2, F2, covalent bonding is driven by the attenuation of the kinetic energy that results from the delocalization of the electronic wave function.
Michael W. Schmidt   +2 more
semanticscholar   +1 more source

First‐Principles Modeling of Solid Solution Softening and Hardening Effects in Al–Mg–Zr–Si Aluminum Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
The role of various alloying elements in face‐centered cubic aluminum on the barrier of a Shockley partial dislocation during its motion is presented. The study aims to understand how alloying atoms such as Mg, Si, and Zr affect the energy landscape for dislocation motion, thus influencing the solid solution hardening and softening in aluminum, which ...
Inna Plyushchay   +3 more
wiley   +1 more source

Self-Powered Kinetic Energy Harvesters for Seek-Induced Vibrations in Hard Disk Drives

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
Energy harvesters with battery charging circuitry, which collect wasted kinetic energy from a magnetic disk drive's rotary actuator seek operations and flexible cable vibrations, are proposed, prototyped and presented in this paper.
Jen-Yuan (James) CHANG, Mike GUTIERREZ
doaj   +1 more source

Kinetic energy preserving and entropy stable finite volume schemes for compressible Euler and Navier-Stokes equations [PDF]

open access: yesarXiv.org, 2012
Centered numerical fluxes can be constructed for compressible Euler equations which preserve kinetic energy in the semi-discrete finite volume scheme.
P. Chandrashekar
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

Atmospheric Kinetic Energy Spectra from Global High-Resolution Nonhydrostatic Simulations

open access: yes, 2014
Kinetic energy (KE) spectra derived from global high-resolution atmospheric simulations from the Model forPredictionAcrossScales(MPAS)arepresented.Thesimulationsareproducedusingquasi-uniformglobal Voronoi horizontal meshes with 3-, 7.5-, and 15-km mean ...
W. Skamarock   +3 more
semanticscholar   +1 more source

High‐Temperature Oxidation of the CrFeNi Medium‐Entropy Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
The oxidation behavior of equiatomic CrFeNi MEA is a key issue that determines this material's suitability for high‐temperature application. The understanding of long‐term behavior is even more crucial than short‐term corrosion effects. The alloy is exposed to synthetic air at 1000, 1050, and 1100 °C for 24, 100, and 1000 h and systematically compared ...
Anna Maria Manzoni   +5 more
wiley   +1 more source

ENERGY SAVING MODES DEFINITION OF TRAINS HANDLING

open access: yesNauka ta progres transportu, 2016
Purpose. Traction calculations with the definition of energy-efficient trajectories provide search for rational energy consumption depending on the time course of the train.
D. M. Kyslyi
doaj   +1 more source

Investigation of 3D Wave Propagation in Foam‐Core Functionally Graded Material Magneto‐Piezoelectric Smart Nanoplates

open access: yesAdvanced Engineering Materials, EarlyView.
This study reveals how wave propagation in FG‐MEE nanoplates can be tuned via material gradients, porosity, and external fields. Using NSGT and Hamilton's principle, analytical solutions capture key dispersion behaviors. Findings highlight the potential of smart nanoplates for adaptive control in high‐performance applications like sonar and aerospace ...
Mustafa Buğday, Ismail Esen
wiley   +1 more source

Comparison between sprinkler irrigation and natural rainfall based on droplet diameter

open access: yesSpanish Journal of Agricultural Research, 2016
An indoor experiment was conducted to analyze the movement characteristics of different sized droplets and their influence on water application rate distribution and kinetic energy distribution.
Maosheng Ge   +3 more
doaj   +1 more source

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