Results 11 to 20 of about 600,912 (282)

Experimental study of the influence of drainage conditions on sandstone mechanics and its deformation localization characteristics

open access: yesMeitan kexue jishu, 2023
In order to study the deformation localization failure characteristics of sandstone under the coupling action of seepage and stress, the triaxial compression tests of sandstone under different drainage conditions were carried out using the visualized ...
Jiang XU   +5 more
doaj   +1 more source

Strain localization analysis using a multiscale model [PDF]

open access: yes, 2007
In order to analyze the formability of steels in sheet metal forming, a ductility loss criterion is coupled with a multiscale model. The behavior at the mesoscopic (grain) scale is modeled by a large strain micromechanical constitutive law, which is then
ABED-MERAIM, Farid   +4 more
core   +8 more sources

Strain-gradient mediated local conduction in strained bismuth ferrite films [PDF]

open access: yesNature Communications, 2019
AbstractIt has been recently shown that the strain gradient is able to separate the light-excited electron-hole pairs in semiconductors, but how it affects the photoelectric properties of the photo-active materials remains an open question. Here, we demonstrate the critical role of the strain gradient in mediating local photoelectric properties in the ...
Ming-Min Yang   +4 more
openaire   +4 more sources

Fracture of disordered solids in compression as a critical phenomenon: III. Analysis of the localization transition [PDF]

open access: yes, 2002
The properties of the Hamiltonian developed in Paper II are studied showing that at a particular strain level a ``localization'' phase transition occurs characterized by the emergence of conjugate bands of coherently oriented cracks.
C.H. Scholz   +4 more
core   +5 more sources

On materially and geometrically non-linear analysis of reinforced concrete planar frames [PDF]

open access: yes, 2004
A family of new beam finite elements for geometrically and materially non-linear static analysis of reinforced concrete planar frames is derived, in which strain measures are the only interpolated unknowns, and where the constitutive and equilibrium ...
Bratina, Sebastjan   +2 more
core   +1 more source

Study on the Grain Rotation of High-Purity Tantalum during Compression Deformation

open access: yesCrystals, 2022
A compression experiment with electron backscatter diffraction (EBSD) measurements was designed to characterize the effect of the microtexture on the grain rotation process.
Qianqian Zhu   +6 more
doaj   +1 more source

Critical Strain Region Evaluation of Self-Assembled Semiconductor Quantum Dots [PDF]

open access: yes, 2007
A novel peak finding method to map the strain from high resolution transmission electron micrographs, known as the Peak Pairs method, has been applied to In(Ga) As/AlGaAs quantum dot (QD) samples, which present stacking faults emerging from the QD edges.
D L Sales   +16 more
core   +2 more sources

Discrete-element modeling of strain localization in a dense and highly coordinated periodic granular assembly

open access: yesFracture and Structural Integrity, 2022
Strain localization is one of the key phenomena which has been extensively studied in geomaterials and for other kinds of materials including metals and polymers. This well-known phenomenon appears when structure/material is closed to failure.
Trung-Kien Nguyen   +2 more
doaj   +1 more source

Crossover from quasi-static to dense flow regime in compressed frictional granular media [PDF]

open access: yes, 2013
We investigate the evolution of multi-scale mechanical properties towards the macroscopic mechanical instability in frictional granular media under multiaxial compressive loading.
Amitrano, David   +2 more
core   +5 more sources

Finite element simulation of strain localization in inelastic solids by energy relaxation

open access: yesVietnam Journal of Mechanics, 2011
A new approach for the treatment of strain localization in inelastic material is proposed. It is based on energy minimization principles associated with micro-structure developments. Shear bands are treated as micro-shearing of rank-one laminates.  It is
B. T. Trinh, K. Hackl
doaj   +1 more source

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