998 resultados para More, Hannah, 1745-1833.
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Revised: 2006-05.-- Published as an article in: The Review of Economics and Statistics, 2004, vol. 86, issue 4, pp. 1034-1036.
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Parte 1 - Atos do Poder Legislativo
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Spherical nano-indentations of Cu46Zr54 bulk metallic glass (BMG) model systems were performed using molecular dynamics (MD) computer simulations, focusing specifically on the physical origin of serrated plastic flow. The results demonstrate that there is a direct correlation between macroscopic flow serration and underlying irreversible rearrangement of atoms, which is strongly dependent on the loading (strain) rate and the temperature. The serrated plastic flow is, therefore, determined by the magnitude of such irreversible rearrangement that is inhomogeneous temporally. A dimensionless Deborah number is introduced to characterize the effects of strain rate and temperature on serrations. Our simulations are shown to compare favorably with the available experimental observations.
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Boeckx C., M.C. Horno & J.L. Mendívil (Eds.)