Results 51 to 60 of about 339,154 (296)

Shear-Transformation-Zone Theory of Linear Glassy Dynamics

, 2011
We present a linearized shear-transformation-zone (STZ) theory of glassy dynamics in which the internal STZ transition rates are characterized by a broad distribution of activation barriers.
Bouchbinder, Eran, Langer, J. S.
core   +1 more source

Mechanisms for slow strengthening in granular materials [PDF]

, 1999
Several mechanisms cause a granular material to strengthen over time at low applied stress. The strength is determined from the maximum frictional force F_max experienced by a shearing plate in contact with wet or dry granular material after the layer ...
A. Ruina, A.J. Liu, C. Marone, C. Marone, C. Scholz, C.H. Liu, D. Howell, D.M. Hanes, E. Aharonov, F. Radjai, G. Hähner, H.M. Jaeger, J. Krim, J. P. Gollub, J.-C. Géminard, J.C. Géminard, J.H. Dieterich, J.K. Morgan, J.K. Morgan, L. Bocquet, L. Vanel, M. Nakatani, M.E. Cates, O. Reynolds, P. Berthoud, P.A. Thompson, S. Nasuno, S. Nasuno, S. Nasuno, S.F. Edwards, S.L. Karner, T. Baumberger, W. Losert, Y. Zhang   +33 more
core   +2 more sources

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

The Capo Castello Shear Zone (Eastern Elba Island): Deformation at the Contact between Oceanic and Continent Tectonic Units

Geosciences, 2020
Low-grade mylonitic shear zones are commonly characterized by strain partitioning, with alternating low strain protomylonite and high strain mylonite and ultramylonite, where the shearing is most significant. In this paper the capo Castello shear zone is
Caterina Bianco
doaj   +1 more source

Activated dynamics and effective temperature in a steady state sheared glass

, 2007
We conduct nonequilibrium molecular dynamics simulations to measure the shear stress, the average inherent structure energy, and the effective temperature $T_{eff}$ of a sheared model glass as a function of bath temperature $T$ and shear strain rate. For
Andrea J. Liu, J. Kurchan, M. P. Allen, Thomas K. Haxton   +3 more
core   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Critical packing in granular shear bands

, 2007
In a realistic three-dimensional setup, we simulate the slow deformation of idealized granular media composed of spheres undergoing an axisymmetric triaxial shear test.
A. Casagrande, A. N. Schofield, C. Lee, D. Daudon, H. Edelsbrunner, H. Sakaguchi, H. Tsunekawa, J. Desrues, J. Desrues, J. Kertész, J. Török, K. A. Alshibli, L. Cui, L. D. Landau, O. Reynolds, P. A. Cundall, S. Fazekas, S. Fazekas, S. N. Batiste, T. L. Youd, T. Pöschel, V. Trappe   +21 more
core   +1 more source

A Model for the Moving `Wisps' in the Crab Nebula [PDF]

, 1998
I propose that the moving `wisps' near the center of the Crab Nebula result from nonlinear Kelvin-Helmholtz instabilities in the equatorial plane of the shocked pulsar wind. Recent observations suggest that the wisps trace out circular wavefronts in this
Ferrari A., Kundt W., Lou Y.-Q., Mitchell C. Begelman, Oort J. H., Rees M. J., Woltjer L.   +6 more
core   +2 more sources

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

Strength characteristics of slip zone soils of Tongjiaping landslide in Three Gorges Reservoir area based on seepage-ring shear tests

Yantu gongcheng xuebao, 2023
The slip zone soil plays an important role in controlling the deformation and evolution of landslides. It is of great significance to study the strength characteristics of slip zone soils under different seepage conditions for the dynamic stability ...
MIAO Fasheng , ZHAO Fancheng , WU Yiping , MENG Jiajia
doaj   +1 more source