Results 21 to 30 of about 9,504,346 (343)

Grinfeld instability on crack surfaces [PDF]

open access: yesPhysical Review E, 2001
The surface of a propagating crack is shown to be morphologically unstable because of the nonhydrostatic stresses near the surface (Asaro-Tiller-Grinfeld instability). We find numerically that the energy of a wavy crack becomes smaller than the energy of a straight crack if the crack length exceeds a critical length L(c)=5.18 L(G) (L(G) is the Griffith
Spatschek, R., Brener, E. A.
openaire   +3 more sources

Similar Simulation Test on Deformation Characteristics of Overlying Rock Developed by Instability of Strip Coal Pillar

open access: yesShock and Vibration, 2022
In order to protect surface buildings and maximize the recovery of coal resources, there are a large number of strip coal pillars and unfilled goafs left in strip mining areas in China.
Yong Liu   +3 more
doaj   +1 more source

The Electric Honeycomb; an investigation of the Rose window instability [PDF]

open access: yesRoyal Society Open Science, 2017
The Rose window instability is a little-explored electrohydrodynamic instability that manifests when a layer of low-conducting oil is placed in an electric field generated by corona discharge in a point-to-plane configuration.
Muhammad Shaheer Niazi
doaj   +1 more source

Surface Instability of Composite Thin Films on Compliant Substrates: Direct Simulation Approach

open access: yesFrontiers in Materials, 2019
Surface instability via wrinkle formation is a common feature in thin films attached to a compliant substrate. Wrinkled thin-film structures have been increasingly exploited to enhance device performance.
S. Nikravesh   +2 more
semanticscholar   +1 more source

Swell-induced surface instability of confined hydrogel layers on substrates

open access: yesJournal of the Mechanics and Physics of Solids, 2010
M. Kang, Rui Huang
semanticscholar   +3 more sources

Surface instability of a semi-infinite isotropic laminated plate under surface van der Waals forces

open access: yesArchives of Mechanics, 2015
By means of complex variable method, the present work demonstrates that the surface of a semi-infinite isotropic laminated plate that is being attracted to a rigid contactor through van der Waals forces is always unstable.
X. Wang, Y. Xu, K. Zhou
doaj   +1 more source

Homoclinic snaking near the surface instability of a polarisable fluid [PDF]

open access: yesJournal of Fluid Mechanics, 2015
We report on localised patches of cellular hexagons observed on the surface of a magnetic fluid in a vertical magnetic field. These patches are spontaneously generated by jumping into the neighbourhood of the unstable branch of the domain-covering ...
D. Lloyd   +3 more
semanticscholar   +1 more source

Impaired perception of surface tilt in progressive supranuclear palsy. [PDF]

open access: yesPLoS ONE, 2017
INTRODUCTION:Progressive supranuclear palsy (PSP) is characterized by early postural instability and backward falls. The mechanisms underlying backward postural instability in PSP are not understood.
Marian L Dale   +5 more
doaj   +1 more source

LABORATORY TESTS OF A FOUR-SECTION SEED WHEEL WITH GROOVES IN THE SHAPE OF A PART OF THE ROTATION SURFACE OF A TORUS [PDF]

open access: yesVolga Region Farmland, 2020
The article deals with the issue of improving the quality indicator of sowing cereal seeds, such as instability of total sowing and the results of laboratory research of experimental sowing machine, the reel of which is made four-sectional, with grooves ...
N.P. Laryushin   +3 more
doaj   +1 more source

Origin of the quasi-quantized Hall effect in ZrTe5

open access: yesNature Communications, 2021
A 3D quantum Hall effect has been reported in Dirac semimetal ZrTe5 due to a magnetic-field-driven Fermi surface instability. Here, the authors show evidence of quasi-quantized Hall response without Fermi surface instability, but they argue that it is ...
S. Galeski   +26 more
doaj   +1 more source

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