Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Diego Tramontina"'
Autor:
Iyad Alabd Alhafez, Orlando R. Deluigi, Diego Tramontina, Nina Merkert, Herbert M. Urbassek, Eduardo M. Bringa
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract The plastic response of the Senkov HfNbTaTiZr high-entropy alloy is explored by means of simulated nanoindentation tests. Both a random alloy and an alloy with chemical short-range order are investigated and compared to the well understood c
Externí odkaz:
https://doaj.org/article/7929682aeaa1406693ae05c50322816a
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-14 (2023)
Abstract Compression of a magnetic material leads to a change in its magnetic properties. We examine this effect using spin-lattice dynamics for the special case of bcc-Fe, using both single- and poly-crystalline Fe and a bicontinuous nanofoam struct
Externí odkaz:
https://doaj.org/article/953d3a6243824a45898af3c9bb46ba56
Autor:
Iyad Alabd Alhafez, Orlando R. Deluigi, Diego Tramontina, Carlos J. Ruestes, Eduardo M. Bringa, Herbert M. Urbassek
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-14 (2023)
Abstract We investigate by molecular dynamics simulation the mechanical behavior of concentrated alloys under nanoindentation for the special example of single-phase fcc Fe $$_{x}$$ x Ni $$_{1-x}$$ 1 - x alloys. The indentation hardness is maximum fo
Externí odkaz:
https://doaj.org/article/b9a8f32e44cd45d2b74be1a79862000e
Autor:
Sébastien Verkercke, Jean-Yves Chaufray, François Leblanc, Eduardo Bringa, Diego Tramontina, Liam Morrissey, Adam Woodson
Airless planetary bodies’ surfaces, such as the Moon’s or Mercury’s, are composed of porous regoliths which interact directly with the impinging solar wind. In the case of the Moon, this incoming flux of solar protons has been observed to be pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb0ab6477e2e4db7e7879c8995594416
https://doi.org/10.5194/egusphere-egu23-1163
https://doi.org/10.5194/egusphere-egu23-1163
Publikováno v:
Physical Chemistry Chemical Physics. 18:3423-3429
When nanoparticles (NPs) collide with low velocities, they interact elastically in the sense that – besides their fusion caused by their mutual van-der-Waals attraction – no defects are generated. We investigate the minimum velocity, vc, necessar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd8a58a950a43940c57ab5d8151cfeba
https://doi.org/10.1039/c5cp05150a
https://doi.org/10.1039/c5cp05150a
Publikováno v:
AIP Conference Proceedings.
We simulate strong shock waves in nanocrystalline tantalum using atomistic molecular dynamics simulations, for particle velocities in the range 0.35-2.0 km s−1, which induce pressures in the range 20-195 GPa. Our simulations explore strain rates in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::46d95ac247e5f272707401a529c8dd54
https://doi.org/10.1063/1.4971590
https://doi.org/10.1063/1.4971590
Autor:
Carlos J. Ruestes, Eduardo M. Bringa, Alexander Stukowski, Paul Erhart, Bruce Remington, Herbert M. Urbassek, Marc A. Meyers, Diego Tramontina, Yizhe Tang
Publikováno v:
Materials Science and Engineering: A. 613:390-403
Nanoindentation simulations are a helpful complement to experiments. There is a dearth of nanoindentation simulations for bcc metals, partly due to the lack of computationally efficient and reliable interatomic potentials at large strains. We carry o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::998744e8f01e936dd2d9103bcb4e0439
https://doi.org/10.1016/j.msea.2014.07.001
https://doi.org/10.1016/j.msea.2014.07.001
Autor:
Timothy C. Germann, Paul Erhart, Alexander Stukowski, James Hawreliak, Eduardo M. Bringa, Diego Tramontina, Andrew Higginbotham, Matthew Suggit, Justin Wark, Nigel Park, Ramon Ravelo, Yizhe Tang
Publikováno v:
High Energy Density Physics. 10:9-15
We present Non-Equilibrium Molecular Dynamics (NEMD) simulations of shock wave compression along the [001] direction in monocrystalline Tantalum, including pre-existing defects which act as dislocation sources. We use a new Embedded Atom Model (EAM)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::831cffda19d57b108edab3e2b78053b5
https://doi.org/10.1016/j.hedp.2013.10.007
https://doi.org/10.1016/j.hedp.2013.10.007
Autor:
Felipe J. Valencia, Rafael I. González, Eduardo M. Bringa, Miguel Kiwi, José Rogan, Juan Alejandro Valdivia, Diego Tramontina
The potential and properties of palladium hollow nanoparticles (hNPs) as a possible H storage material are explored by means of classical molecular dynamics (MD) simulations. First, we study the stability of pure Pd hNPs for different sizes and thick
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48901b4e20fb7f1842d499b1d84291d5
https://pubs.acs.org/doi/10.1021/acs.jpcc.6b07895
https://pubs.acs.org/doi/10.1021/acs.jpcc.6b07895
In this work we study, by means of molecular dynamics simulation, the change in the mechanical properties of a gold nanowire with pre-existing radiation damage. The gold nanowire is used as a simple model for a nanofoam, made of connected nanowires.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b32eb94e443ad22a685c0ae016e201e
https://www.sciencedirect.com/science/article/pii/S002231151530283X
https://www.sciencedirect.com/science/article/pii/S002231151530283X