Results 21 to 30 of about 593,505 (300)

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

, 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, Gimbert, Florent, Weiss, Jérôme   +2 more
core   +5 more sources

Episodic Tremor and Slip Explained by Fluid‐Enhanced Microfracturing and Sealing

Geophysical Research Letters, 2018
Episodic tremor and slow‐slip events at the deep extension of plate boundary faults illuminate seismic to aseismic processes around the brittle‐ductile transition.
M. Bernaudin, F. Gueydan
doaj   +1 more source

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

Fracture 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, Thanh-Trung Vo, Nhu-Hoang Nguyen   +2 more
doaj   +1 more source

Strain localization and anisotropic correlations in a mesoscopic model of amorphous plasticity [PDF]

, 2012
A mesoscopic model for shear plasticity of amorphous materials in two dimensions is introduced, and studied through numerical simulations in order to elucidate the macroscopic (large scale) mechanical behavior.
Argon, Baret, Ben-Zion, Berveiller, Bocquet, Bulatov, Bulatov, Bulatov, Chen, Dahmen, Damien Vandembroucq, Delogu, Demkowicz, Demkowicz, Demkowicz, Ernsberger, Eshelby, Falk, Goldenberg, Homer, Jagla, Kardar, Kardar, Lemaître, Lemaître, Leonforte, Leonforte, Leonforte, Leonforte, Lerner, Lerner, Lewandowski, Lund, MacNeill, Maloney, Maloney, Maloney, Maloney, Maloney, Marsh, Mehdi Talamali, Narayan, Packard, Peter, Picard, Rodney, Rodney, Rottler, Rottler, Rountree, Schuh, Shi, Shi, Shi, Sollich, Stéphane Roux, Takeshi, Talamali, Talamali, Talati, Tanguy, Taylor, Tsamados, Tsamados, Vandembroucq, Vandembroucq, Varnik, Varnik, Viljo Petäjä, Zaiser, Zaoui, Zhang   +71 more
core   +14 more sources

Strain Localisation and Fracture of Nuclear Reactor Core Materials

Journal of Nuclear Engineering, 2023
The production of prismatic dislocation loops in nuclear reactor core materials results in hardening because the loops impede dislocation motion. Yielding often occurs by a localised clearing of the loops through interactions with gliding dislocations ...
Malcolm Griffiths
doaj   +1 more source

Emergence of Shear Bands in Confined Granular Systems: Singularity of the q-Statistics

Entropy, 2018
The statistics of grain displacements probability distribution function (pdf) during the shear of a granular medium displays an unusual dependence with the shear increment upscaling as recently evinced (see “experimental validation of a ...
Léo Viallon-Galinier, Gaël Combe, Vincent Richefeu, Allbens Picardi Faria Atman   +3 more
doaj   +1 more source

A Comparison of Plasticity Regularization Approaches for Geodynamic Modeling

Geochemistry, Geophysics, Geosystems, 2023
The emergence, geometry and activation of faults are intrinsically linked to frictional rheology. The latter is thus a central element in geodynamic simulations which aim at modeling the generation and evolution of fault zones and plate boundaries ...
Thibault Duretz, Ludovic Räss, René deBorst, Tim Hageman   +3 more
doaj   +1 more source

Quantitative Evaluation of Soil Structure and Strain in Three Dimensions under Shear Using X-ray Computed Tomography Image Analysis

Journal of Imaging, 2021
The objective of this study is to quantitatively evaluate the soil structure behavior when under shear stress to understand the mechanism of shear zone formation using a micro-focus X-ray computed tomography (CT) scanner to visualize the internal samples
Shintaro Nohara, Toshifumi Mukunoki
doaj   +1 more source

Strain localization in a shear transformation zone model for amorphous solids

, 2007
We model a sheared disordered solid using the theory of Shear Transformation Zones (STZs). In this mean-field continuum model the density of zones is governed by an effective temperature that approaches a steady state value as energy is dissipated.
D. Griggs, E. M. Lifshitz, J. Lewandowski, J. M. Carlson, J. S. Langer, M. Falk, M. Falk, M. L. Manning, V. V. Bulatov   +8 more
core   +1 more source

Statistical method for quantifying the strain localization process in Beishan granite under multi-creep triaxial compression based on distributed optical fiber sensing

Journal of Rock Mechanics and Geotechnical Engineering
To investigate the damage evolution caused by stress-driven and sub-critical crack propagation within the Beishan granite under multi-creep triaxial compressive conditions, the distributed optical fiber sensing and X-ray computed tomography were combined
Xiujun Zhang, Peng-Zhi Pan, Shuting Miao
doaj   +1 more source