Results 21 to 30 of about 1,654,839 (351)

Flare energy release by flux pile-up magnetic reconnection in a turbulent current sheet [PDF]

open access: yes, 2000
The power output of flux pile-up magnetic reconnection is known to be determined by the total hydromagnetic pressure outside the current sheet. The maximum energy-release rate is reached for optimized solutions that balance the maximum dynamic and ...
Craig, Ian J.D., Litvinenko, Yuri E.
core   +2 more sources

Fatigue Crack Propagation Study of Bridge Steel Q345qD Based on XFEM Considering the Influence of the Stress Ratio

open access: yesApplied Sciences, 2022
In the past, fatigue cracks have appeared in the orthotropic steel decks of bridges shortly after they opened to traffic. Previous studies have shown that high tensile welding residual stress exists in welded joints of steel bridges, which significantly ...
Baoya Cao   +4 more
doaj   +1 more source

Energy release rate for non smooth cracks in planar elasticity [PDF]

open access: yes, 2014
This paper is devoted to the characterization of the energy release rate of a crack which is merely closed, connected, and with density $1/2$ at the tip.
Babadjian, Jean-François   +2 more
core   +3 more sources

A mesh-free simulation of mode I delamination of composite structures

open access: yesScience and Engineering of Composite Materials, 2014
A numerical and experimental investigation for the analysis of delamination problem under mode I loading in composite material is presented. Firstly, the simulation of the delamination under mode I loading and failure of composite materials based on the ...
Hesar Goudarz Ghanizadeh   +3 more
doaj   +1 more source

Determination of the critical load and energy release rate in mode II delamination using a meshfree method

open access: yesScience and Engineering of Composite Materials, 2014
Simulation of fracture by using numerical methods is important to treat geometries that change in time. In this study, both numerical and experimental investigations are presented for the delamination under mode II loading, detailing the derivation of ...
Pekbey Yeliz   +3 more
doaj   +1 more source

Failure Behavior and Energy Storage and Release of Hard Coal under Different Static and Dynamic Loading States

open access: yesAdvances in Civil Engineering, 2020
The study of the energy accumulation and rate of release in hard coal under dynamic, static, and coupled dynamic-static loading and its failure mode is of significance when studying the mechanism underpinning coal mine dynamic disasters such as rock ...
XianJie Hao   +4 more
doaj   +1 more source

Nanobeams with Internal Discontinuities: A Local/Nonlocal Approach

open access: yesNanomaterials, 2021
The aim of the present work is to extend the two-phase local/nonlocal stress-driven integral model (SDM) to the case of nanobeams with internal discontinuities: as a matter of fact, the original formulation avoids the presence of any discontinuities ...
Daniela Scorza   +2 more
doaj   +1 more source

Shear wave dissipation in planar magnetic X-Points [PDF]

open access: yes, 1997
The resistive dissipation of nonlinear shear wave disturbances is discussed. We consider an incompressible, “open” X-point geometry, in which mass and energy are free to enter and leave the reconnection region.
Craig, Ian J.D., McClymont, A.N.
core   +2 more sources

Effects of HfC Particles on Crack Initiation and Propagation Behavior of WC/Co Composites

open access: yesXibei Gongye Daxue Xuebao, 2019
Tungsten carbide composites were prepared by cold-pressing and hot-pressing sintering; fracture toughness and bending strength of the specimens were tested. The microstructures of HfC/WC/Co composites were observed with the SEM.

doaj   +1 more source

Analytical Solution for a 1D Hexagonal Quasicrystal Strip with Two Collinear Mode-III Cracks Perpendicular to the Strip Boundaries

open access: yesCrystals, 2023
We considered the problem of determining the singular elastic fields in a one-dimensional (1D) hexagonal quasicrystal strip containing two collinear cracks perpendicular to the strip boundaries under antiplane shear loading. The Fourier series method was
Jing Yu, Junhong Guo
doaj   +1 more source

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