Results 21 to 30 of about 6,255,996 (283)

On a nonolinear wave equation in unbounded domains

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
We study existence and uniqeness of the nonlinear wave equation∂2u∂t2+M(x,∫|∇u(x,t)|2dx+∫|u(x,t)|2dx)(−Δu+u)=0in unbounded domains. The above model describes nonlinear wave phenomenon in non-homogeneous media.
Carlos Frederico Vasconcellos
doaj   +1 more source

Buckling Analysis for Wind Turbine Tower Design: Thrust Load versus Compression Load Based on Energy Method

open access: yesEnergies, 2020
Tubular steel towers are the most common design solution for supporting medium-to-high-rise wind turbines. Notwithstanding, historical failure incidence records reveal buckling modes as a common type of failure of shell structures.
Yang Ma   +2 more
doaj   +1 more source

Neutrino energy reconstruction from one muon and one proton events [PDF]

open access: yes, 2016
We propose a new method of selection of high purity charge current quasielastic neutrino events with a good reconstruction of interacting neutrino energy.
Furmanski, Andrew P., Sobczyk, Jan T.
core   +3 more sources

Diagnosis of axial displacement in transformer windings using finite element analysis

open access: yesJournal of Mathematical Sciences and Modelling, 2018
Transformer is one of the main equipment in the power system and power quality of the power system mainly depends on the working of the power transformer. Leakage reactance is one of the main parameters of the transformer.
Kamran Dawood   +2 more
doaj   +1 more source

A Crank–Nicolson Compact Difference Method for Time-Fractional Damped Plate Vibration Equations

open access: yesAxioms, 2022
This paper discusses the Crank–Nicolson compact difference method for the time-fractional damped plate vibration problems. For the time-fractional damped plate vibration equations, we introduce the second-order space derivative and the first-order time ...
Cailian Wu   +3 more
doaj   +1 more source

Analytical Solutions for the Flexural Behavior of Metal Beams Strengthened with Prestressed Unbonded CFRP Plates [PDF]

open access: yesCivil Engineering Infrastructures Journal, 2018
Trapezoidal prestressed unbonded retrofit (TPUR) systems have been recently developed and tested. The authors have already developed a comprehensive and accurate analytical solution for the TPUR system that takes many system parameters into account.
Farrokh Kianmofrad   +3 more
doaj   +1 more source

A Quantum Monte Carlo Method at Fixed Energy

open access: yes, 2009
In this paper we explore new ways to study the zero temperature limit of quantum statistical mechanics using Quantum Monte Carlo simulations. We develop a Quantum Monte Carlo method in which one fixes the ground state energy as a parameter.
Beard   +15 more
core   +1 more source

Crack paths in multiaxial fatigue of C45 steel specimens and correlation of lifetime with the thermal energy dissipation

open access: yesFracture and Structural Integrity, 2021
The work reports the observed fatigue damage of C45 steel specimens tested in a previous work under multiaxial loading conditions and its relationship with the thermal energy dissipation which has been used in the last decades to estimate the uniaxial ...
Daniele Rigon   +2 more
doaj  

Elastic coupled local buckling strength of I‐shaped steel member in uniform bending

open access: yesJapan Architectural Review, 2023
This research aims to theoretically derive a closed‐form evaluation formula for the coupled local buckling strength of I‐shaped steel members under uniform bending.
Kazuya Mitsui, Ryohei Kuwada
doaj   +1 more source

Machine learning models for the prediction of turbulent combustion speed for hydrogen-natural gas spark ignition engines

open access: yesHeliyon
The work carried out in this paper focused on “Machine learning models for the prediction of turbulent combustion speed for hydrogen-natural gas spark ignition engines”. The aim of this work is to develop and verify the ability of machine learning models
Nelson Junior Issondj Banta   +3 more
doaj   +1 more source

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