Zobrazeno 1 - 10
of 15
pro vyhledávání: '"J. E. Hammerberg"'
Publikováno v:
Journal of Applied Physics. 131
We discuss large-scale non-equilibrium molecular dynamics (NEMD) simulations of ductile metal sliding comprising up to 1.8 × 109 atoms over time scales of 100 ns. The results of these simulations have identified a variety of physical mechanisms that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fd007e00703dc83a5caaa20eb30b006
https://doi.org/10.1063/5.0082505
https://doi.org/10.1063/5.0082505
Autor:
T. M. Hartsfield, R. K. Schulze, B. M. La Lone, J. J. Charonko, J. E. Hammerberg, J. D. Regele, M. M. Schauer, J. D. Schwarzkopf, D. G. Sheppard, G. D. Stevens, J. C. Cooley, P. M. Donovan, R. Manzanares, J. I. Martinez, D. W. Schmidt, M. D. Staska, R. J. Valencia, W. D. Turley, W. T. Buttler
Publikováno v:
Journal of Applied Physics. 131:195104
In this work, we measure continuous thermal radiance from evolving clouds of liquid metal fragments ejected into vacuum, nonreactive, and reactive gas. We implement a model for the thermalization of the ejecta and gas and use this to constrain the ab
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d1a8f83b10531ff21c3ed7570273328
https://doi.org/10.1063/5.0087212
https://doi.org/10.1063/5.0087212
Publikováno v:
Physical Review B. 57:2759-2766
Using the results of large-scale molecular-dynamics simulations of dry, wearless friction between two flat one-dimensional interfaces, a simple frictional model is formulated with specified parameters. The model, a two-chain-driven Frenkel-Kontorova
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a2a15651e4e816514ebf9da7efe21990
https://doi.org/10.1103/physrevb.57.2759
https://doi.org/10.1103/physrevb.57.2759
Autor:
J. E. Hammerberg, B. L. Holian, T. C. Germann, R. Ravelo, Mark Elert, Michael D. Furnish, William W. Anderson, William G. Proud, William T. Butler
Publikováno v:
AIP Conference Proceedings.
The high velocity properties of the tangential frictional force between ductile metal interfaces seen in large‐scale NonEquilibrium Molecular Dynamics (NEMD) simulations are characterized by interesting scaling behavior. In many cases a power law d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6451efac6205461ca4556bf3c9cdde6
https://doi.org/10.1063/1.3295256
https://doi.org/10.1063/1.3295256
Autor:
M. B. Zellner, M. Grover, J. E. Hammerberg, R. S. Hixson, A. J. Iverson, G. S. Macrum, K. B. Morley, A. W. Obst, R. T. Olson, J. R. Payton, P. A. Rigg, N. Routley, G. D. Stevens, W. D. Turley, L. Veeser, W. T. Buttler, Mark Elert, Michael D. Furnish, Ricky Chau, Neil Holmes, Jeffrey Nguyen
Publikováno v:
AIP Conference Proceedings.
Los Alamos National Lab (LANL) is actively engaged in the development of a model to predict the formation of micron‐scale fragments ejected (ejecta) from shocked metals that have surface defects. The LANL ejecta model considers that the amount of e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::19c40b8ae5940c2205c6254c905c7bb6
https://doi.org/10.1063/1.2833168
https://doi.org/10.1063/1.2833168
A Novel Experimental Technique for the Study of High-Speed Friction under Elastic Loading Conditions
Publikováno v:
AIP Conference Proceedings.
The role of friction in high strain‐rate events is not well understood despite being an important constitutive relationship in modern modeling and simulation studies of explosive events. There is a lack of experimental data available for the valida
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::deabea20c5ff64e5e1ea71f478c34131
https://doi.org/10.1063/1.1780297
https://doi.org/10.1063/1.1780297
Publikováno v:
AIP Conference Proceedings.
It will soon become possible to create confined dusty plasmas in microgravity environments with particle numbers approaching 106. Very high plasma Γ’s are possible, Γ>103. Characteristic time and length scales for these systems are of the order 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb182adb1429b225c247c16be446940f
https://doi.org/10.1063/1.1483553
https://doi.org/10.1063/1.1483553
Publikováno v:
AIP Conference Proceedings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b5a559944977ec4d9951c797fdfbdbb
https://doi.org/10.1063/1.1483756
https://doi.org/10.1063/1.1483756
Publikováno v:
AIP Conference Proceedings.
The physical interactions at the contact interface between two metals moving relative to one another are not well understood, particularly when the relative velocity between the bodies becomes a significant fraction of the sound speed in either mater
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6936cb906e7965b0001eb63a0cda55c6
https://doi.org/10.1063/1.1303681
https://doi.org/10.1063/1.1303681
Publikováno v:
AIP Conference Proceedings.
The authors use molecular dynamics (MD) simulation methods to investigate dusty plasma crystal structure in an external potential, with the grains subject to both a spherically symmetric Debye-Hueckel potential and a cylindrically symmetric dipole in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5085dfd62c7d4e006c5bf0dfb42dbaa
https://doi.org/10.1063/1.56675
https://doi.org/10.1063/1.56675