Results 81 to 90 of about 521,398 (242)

Spectral and transport properties of time-periodic PT-symmetric tight-binding lattices

, 2013
We investigate the spectral properties and dynamical features of a time-periodic PT-symmetric Hamiltonian on a one-dimensional tight-binding lattice. It is shown that a high-frequency modulation can drive the system under a transition between the broken ...
Della Valle, Giuseppe, Longhi, Stefano
core   +1 more source

Extreme-value statistics from Lagrangian convex hull analysis for homogeneous turbulent Boussinesq convection and MHD convection [PDF]

, 2017
We investigate the utility of the convex hull of many Lagrangian tracers to analyze transport properties of turbulent flows with different anisotropy. In direct numerical simulations of statistically homogeneous and stationary Navier-Stokes turbulence ...
Busse, A., Chapman, S. C., Müller, W. -C., Pratt, J., Watkins, N. W.   +4 more
core   +5 more sources

Meshless modelling of dynamic behaviour of glasses under intense shock loadings: application to matter ejection during high velocity impacts on thin brittle targets [PDF]

, 2006
The purpose of this study is to present a new material model adapted to SPH modelling of dynamic behaviour of glasses under shock loadings. This model has the ability to reproduce fragmentation and densification of glasses under compression as well as ...
Barrau, Jean-Jacques, Chevalier, Jean-Marc, Durin, Christian, Espinosa, Christine, Malaise, Frédéric, Michel, Yann   +5 more
core   +1 more source

Dynamic mechanical response and failure behaviour of AlMgB14-based ceramic: experimental observation, constitutive modelling and ballistic performance evaluation

Journal of Materials Research and Technology
AlMgB14-based ceramics have emerged as promising materials for ballistic protection due to their ultra-hardness and low density. However, their dynamic mechanical behaviour and ballistic performance remain underexplored.
Yanyan Lu, Zheng Xu, Yushu Zhang, Tao Suo, Jingxian Zhang, Jianhong Hou, Wenzhi Wang   +6 more
doaj   +1 more source

Towards the azimuthal characteristics of ionospheric and seismic effects of "Chelyabinsk" meteorite fall according to the data from coherent radar, GPS and seismic networks

, 2015
We present the results of a study of the azimuthal characteristics of ionospheric and seismic effects of the meteorite 'Chelyabinsk', based on the data from the network of GPS receivers, coherent decameter radar EKB SuperDARN and network of seismic ...
Bakhtiyarov, V. F., Berngardt, O. I., Dobrynina, A. A., Kusonsky, O. A., Kutelev, K. A., Perevalova, N. P., Shestakov, N. V., Zagretdinov, R. V., Zherebtsov, G. A.   +8 more
core   +1 more source

Revisiting the distance to the nearest UHECR source: Effects of extra-galactic magnetic fields

, 2020
We update the constraints on the location of the nearest UHECR source. By analyzing recent data from the Pierre Auger Observatory using state-of-the-art CR propagation models, we reaffirm the need of local sources with a distance less than 25-100 Mpc ...
Ahlers, Markus, de Souza, Vitor, Lang, Rodrigo Guedes, Taylor, Andrew M.   +3 more
core   +1 more source

Ballistic nanofriction

, 2010
Sliding parts in nanosystems such as Nano ElectroMechanical Systems (NEMS) and nanomotors, increasingly involve large speeds, and rotations as well as translations of the moving surfaces; yet, the physics of high speed nanoscale friction is so far ...
AE Filippov, AE Filippov, AN Kolmogorov, Andrea Vanossi, D Dietzel, D Fleishman, Erio Tosatti, FP Bowden, G Paolicelli, H Hedgeland, H Risken, J Krim, J Tersoff, JK Gimzewski, L Bardotti, L Bruschi, LJ Lewis, M Dienwiebel, M Ternes, M Urbakh, NS Tambe, P Jensen, PD Weidman, RA Johnson, RA van Delden, Roberto Guerra, S Pisov, SH Kim, Ugo Tartaglino, V Balzani, WD Luedtke, WR Browne, Y Maruyama, Z Farkas   +33 more
core   +1 more source

Erosion of dust aggregates [PDF]

, 2013
Aims: The aim of this work is to gain a deeper insight into how much different aggregate types are affected by erosion. Especially, it is important to study the influence of the velocity of the impacting projectiles.
Kley, Wilhelm, Krijt, Sebastiaan, Seizinger, Alexander   +2 more
core   +4 more sources

Nonergodic dynamics of force-free granular gases

, 2015
We study analytically and by event-driven molecular dynamics simulations the nonergodic and aging properties of force-free cooling granular gases with both constant and velocity-dependent (viscoelastic) restitution coefficient $\varepsilon$ for particle ...
Bodrova, Anna, Chechkin, Aleksei V., Cherstvy, Andrey G., Metzler, Ralf   +3 more
core   +1 more source

Scale Effects on the Ballistic Penetration of Graphene Sheets

Scientific Reports, 2018
Carbon nanostructures are promising ballistic protection materials, due to their low density and excellent mechanical properties. Recent experimental and computational investigations on the behavior of graphene under impact conditions revealed ...
Rafael A. Bizao, Leonardo D. Machado, Jose M. de Sousa, Nicola M. Pugno, Douglas S. Galvao   +4 more
doaj   +1 more source