Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Frederick Milstein"'
Publikováno v:
Journal of Spacecraft and Rockets. 46:923-928
Autor:
Huy K. Tran, Kelly E. Parmenter, Christine E. Szalai, Daniel J. Rasky, Frederick Milstein, Karl Shuman
Publikováno v:
Journal of Spacecraft and Rockets. 39:290-298
Silicone impregnated reusable ceramic ablators are highly porous fibrous ceramic substrates that are partially impregnated with silicone. The ablators are used as heat shields for planetary entry. The compressive responses of virgin and charred ablat
Autor:
Huy K. Tran, Frederick Milstein, Christine E. Szalai, Daniel J. Rasky, Karl Shuman, Kelly E. Parmenter
Publikováno v:
Journal of Spacecraft and Rockets. 38:231-236
Lightweight ceramic ablators are porouse brousceramicsubstrates impregnated with organicresins. Thematerialsweredevelopedforuseasheatshieldsforplanetaryentry.Thecompressiveresponseandhardnessofaphenolic impregnated carbon ablator and its e brous subs
Publikováno v:
Physical Review B. 62:13799-13802
Isostress molecular-dynamics (MD) simulations demonstrate that violations of the classical conditions for elastic stability predict the onset of $\mathrm{bc}\stackrel{\ensuremath{\rightarrow}}{c}\mathrm{hcp}$ transitions. Mechanical, geometric, and k
Publikováno v:
Physical Review B. 58:5996-6005
An embeded-atom method (EAM) formulation that can reproduce identically the empirically determined second-order and third-order elastic moduli is employed in constructing the EAM models of 12 cubic metals (Ag, Al, Au, Cu, Fe, K, Li, Mo, Na, Nb, Ni, a
Publikováno v:
Physical Review B. 58:6006-6018
The theoretical mechanical response of 12 cubic metals (Al, Cu, Mo, Na, Li, K, Rb, Nb, Fe, Ni, Au, and Ag) to unconstrained uniaxial loadings, coaxial with each of the three principal symmetry directions, is analyzed, at finite strain, in the framewo
Autor:
Frederick Milstein, Kelly E. Parmenter
Publikováno v:
Journal of Non-Crystalline Solids. 223:179-189
Aerogels are extremely low density solids that are characterized by a high porosity and pore sizes in the order of nanometers. The mechanical behavior of silica aerogel was investigated with hardness, compression, tension and shear tests. The influen
Publikováno v:
Solid State Communications. 99:807-811
Post-bifurcation phenomena accompanying the branching of cubic crystals under hydrostatic pressure at instabilities associated with the vanishing of shear moduli are studied analytically and computationally. It is shown that pseudopotential models of
Autor:
Frederick Milstein, Daniel J. Rasky
Publikováno v:
Physical Review B. 54:7016-7025
The elastic stability of the bcc and fcc alkali metals is studied theoretically over wide ranges of hydrostatic pressure P. A pseudopotential model is employed to compute the variations of the bulk moduli \ensuremath{\kappa} and shear moduli \ensurem
Publikováno v:
Physical Review B. 53:14080-14088
The higher-order elasticity of cubic metals in the framework of the embedded-atom method (EAM) is investigated. Proper groupings of the second- and third-order elastic moduli are shown to yield expressions that depend solely on either the electron de