Buscar
Mostrando ítems 41-50 de 240
Estudo teórico da contribuição à dose de partículas secundárias geradas por Prótons de energias entre 100 e 200 MeV num Phantom de osso cortical
(Universidade Estadual Paulista (Unesp), 2008)
In proton therapy, the deposition of secondary particles energy originated by nuclear inelastic process (n, 2H, 3H, 3He and α) has a contribution in the total dose that deserves to be discussed. In calculations of plans ...
Epistemic uncertainty of linear building models and inelastic continuum concrete models
(2018)
Los modelos de edificios de hormigón armado (HA) consideran distintos supuestos de modelización que influyen en la precisión para la predicción de la respuesta sísmica. Además, su respuesta no lineal depende fuertemente ...
Análise de degradação material, bifurcação e transição entre descontinuidades fracas e fortes através do método dos elementos de contorno
(Universidade Federal de Minas GeraisUFMG, 2016-04-29)
The implicit formulation of the boundary element method is applied to bidimensional problems of material failure involving, sequentially, inelastic dissipation with softening in continuous media, bifurcation and transition ...
Estudo da influência do encruamento do aço e das tensões residuais no comportamento inelástico de pórticos planos via análise avançada
(Universidade Federal de Minas GeraisUFMG, 2010-05-21)
In this work a geometrically exact formulation to consider material and geometric nonlinearities of steel plane frames, by Finite Element Method (FEM), using the concepts of distributed-plasticity is presented. An overview ...
Estudo teórico da contribuição a dose de partículas secundárias geradas por prótons de energias entre 100-200 MeV num phantom de osso compacto
(Universidade Estadual Paulista (Unesp), 2008)
The contribution of the total dose due to deposition of secondary energy particles caused by nuclear inelastic processes (n, 2H, 3H, 3He and ) in proton therapy is an opened problem and in discussion. In the calculations ...
Caracterización de materiales metálicos y friccionantes en estado tri-axial
(2015)
In the last century there have been several inquiries regarding the mechanical behavior of frictioning materials and metallic materials. The interest of this research lies in representing the real behavior of materials ...
A fixed-mesh Eulerian-Lagrangian approach for stress analysis in continuous casting
(John Wiley & Sons Ltd, 2007-12)
We present a method for the analysis of the strains and stresses developed in the solidified portion of a metal strand during the continuous casting process. Steady-state conditions are assumed. The solidified metal is ...
Magnetic excitations of perovskite rare-earth nickelates: RNiO3
(Elsevier Science, 2015-06)
To gain insight into the ground state of perovskite nickelates RNiO3 (R: rare-earth), in particular charge disproportionation of the Ni ions and the magnetic configuration, we studied the magnetic excitations of the ...
Strain localization, strong discontinuities and material fracture: Matches and mismatches
(Elsevier Science Sa, 2012-10)
The work focuses on the connections of strain localization modeling of material failure and discrete fracture mechanics. It is an attempt to give an answer to the old question of whether the finite element solutions of ...
Intersubband plasmon-phonon modes in quantum wires at high temperatures
(2005-12-14)
Coupled intersubband plasmon-phonon modes are studied in a multisubband parabolic quantum wire at room temperatures. These modes are found by calculating the spectral weight function which is related to the inelastic Raman ...