Results 71 to 80 of about 211,728 (301)

Slow flows of yield stress fluids: complex spatio-temporal behaviour within a simple elasto-plastic model

, 2004
A minimal athermal model for the flow of dense disordered materials is proposed, based on two generic ingredients: local plastic events occuring above a microscopic yield stress, and the non-local elastic release of the stress these events induce in the ...
Armand Ajdari, François Lequeux, G. D. R. Midi, Guillemette Picard, L. Berthier, Lydéric Bocquet   +5 more
core   +2 more sources

Transitional geometries between gently plunging and steeply plunging folds: an example from the Lower Palaeozoic Brabant Massif, Anglo-Brabant deformation belt, Belgium [PDF]

, 2004
A
Debacker, Timothy, SINTUBIN, M, Verniers, Jacques   +2 more
core   +2 more sources

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

Advanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich, Lenka Kunčická, Pavel Czernek, Zifan Wang   +3 more
wiley   +1 more source

Instability-driven interfacial dynamo in protoneutron stars

, 2011
The existence of a tachocline in the Sun has been proven by helioseismology. It is unknown whether a similar shear layer, widely regarded as the seat of magnetic dynamo action, also exists in a protoneutron star.
A. Mastrano, A. Melatos, Basu, Basu, Bonanno, Bonanno, Braithwaite, Brandenburg, Brandenburg, Bruenn, Buras, Burrows, Chandrasekhar, Charbonneau, Christensen-Dalsgaard, Christensen-Dalsgaard, Deinzer, Dessart, Dikpati, Dikpati, Duncan, Ferrario, Ferrario, Ferriz-Mas, Glatzmaier, Glatzmaier, Goode, Gressel, Jones, Kosovichev, MacGregor, Miralles, Naso, Ott, Parker, Parker, Petrovay, Rheinhardt, Roberts, Rogachevskii, Ruderman, Ruderman, Rädler, Rüdiger, Rüdiger, Thompson, Tomczyk, Urpin, Vink, Weiss, Woltjer, Zhang   +51 more
core   +1 more source

Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories

Advanced Engineering Materials, EarlyView.
A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi, Stephan Roth, Christos G. Aneziris, Bjoern Kiefer   +3 more
wiley   +1 more source

Determination of nonlinear permeability parameters for shear zones in Baihetan Hydropower Station by in-situ tests

Yantu gongcheng xuebao, 2020
Based on the Forchheimer equation of generalized nonlinear permeability, an in-situ test method for determining the permeability parameters of nonlinear flow in shear zones is proposed. Based on the field tests of Baihetan Hydropower Station, it is found
ZHOU Zhi-fang 1, LI Si-jia 1, WANG Zhe 1, GUO Qiao-na 1, SHI An-chi 2, CHEN Meng 1, SHEN Qi 1
doaj   +1 more source

Analysis of strain localization with a nonlocal plasticity model [PDF]

, 2017
In the present paper a nonlocal plasticity model is described, intended to reproduce the mechanical behaviour of stiff fine-grained soils, including the objective simulation of strain localization; the phenomenon of accumulation of deformations in narrow ...
Gens Solé, Antonio, Mánica, Miguel A., Ruiz, Daniel F., Vaunat, Jean   +3 more
core  

Signatures of granular microstructure in dense shear flows

, 2000
Granular materials react to shear stresses differently than do ordinary fluids. Rather than deforming uniformly, materials such as dry sand or cohesionless powders develop shear bands: narrow zones containing large relative particle motion leaving ...
A Karion, C Josserand, CT Veje, D Howell, Daniel M. Mueth, DM Hanes, DR Scott, E Fukushima, EE Ehrichs, Georges F. Debregeas, Greg S. Karczmar, H-B Mühlhaus, Heinrich M. Jaeger, J Bridgwater, J Rajchenbach, M Oda, MA Hopkins, O Pouliquen, Peter J. Eng, R Khosropour, RM Nedderman, S Grannick, Sidney R. Nagel, TG Drake, U Tüzün   +24 more
core   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Transpression and tectonic exhumation in the Heimefrontfjella, western orogenic front of the East African/Antarctic Orogen, revealed by quartz textures of high strain domains

Polar Research, 2016
The metamorphic basement of the Heimefrontfjella in western Dronning Maud Land (Antarctica) forms the western margin of the major ca. 500 million year old East African/East Antarctic Orogen that resulted from the collision of East Antarctica and greater ...
Wilfried Bauer, Heinrich Siemes, Gerhard Spaeth, Joachim Jacobs   +3 more
doaj   +1 more source