JULIO RICARDO BARRETO CRUZ
11 resultados
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Artigo IPEN-doc 05874 Stress analysis of a research PWR pressure vessel. A general description1995 - MIRANDA, C.A.J.; MATTAR NETO, M.; OLIVEIRA, C.A.; CRUZ, J.R.B.; BEZERRA, L.M.; ALBUQUERQUE, L.B.; ASSIS, G.M.V.Artigo IPEN-doc 05864 Stress assessment of a component using 3D finite element models1995 - MATTAR NETO, M.; MIRANDA, C.A.J.; CRUZ, J.R.B.; BEZERRA, L.M.Artigo IPEN-doc 05862 ASME limits and contradictions in the finite element analyses of pressure vessels1995 - BEZERRA, L.M.; CRUZ, J.R.B.; MIRANDA, C.A.J.; MATTAR NETO, M.Artigo IPEN-doc 05734 Analise de uma tubulacao com modelos de elementos finitos de tubo e de casca fina1994 - NOBREGA, P.G.B.; CRUZ, J.R.B.; MIRANDA, C.A.J.Artigo IPEN-doc 05732 Analise de tensoes em tubulacoes: comparacao entre modelos com elementos finitos de tubo e de casca fina1994 - NOBREGA, P.G.B.; MIRANDA, C.A.J.; CRUZ, J.R.B.Artigo IPEN-doc 11048 3-D constraint effects on fracture mechanics specimens2005 - RABELLO, E.G.; MATTAR NETO, M.; CRUZ, J.R.B.; GOMES, P.T.V.The constraint is accepted as a measure of the triaxiality level at the crack-tip. Specimens with different a/W ratios present variation on the stress field ahead of the crack-tip. A stress relaxation can occur depending on the a/W values which is known as loss of constraint and has strong influence on the structural steels fracture toughness. Different approaches have been proposed to quantify constraint and to describe the effects of constraint variations on engineering fracture toughness characterized by J-integral, or equivalently the crack-tip opening displacement, CTOD. This paper presents the results of a numerical investigation, in which single-edge cracked bars in three point bend SE(B) and compact tension C(T) specimens, with different relative crack lengths, were systematically studied via detailed three-dimensional finite element analyses. A new parameter is then proposed to quantify crack-tip constraint.Artigo IPEN-doc 10706 Numerical study of 3-D constraint effects in SE(B) specimens2004 - RABELLO, E.G.; CRUZ, J.R.B.; MATTAR NETO, M.; MIRANDA, C.A.J.Artigo IPEN-doc 09842 Estudo comparativo de metodologias para obtencao do parametro inegral J atraves da analise por elementos finitos2003 - RABELLO, E.G.; CRUZ, J.R.B.; MATTAR NETO, M.; MIRANDA, C.A.J.Artigo IPEN-doc 05599 Analise termica de corpos de prova de impacto tipo Charpy com detalhe em V1994 - PAES de ANDRADE, A.H.; MIRANDA, C.A.J.; AQUINO, C.T.E.; CRUZ, J.R.B.Artigo IPEN-doc 02928 Collapse of a ring-stiffened cylindrical shell under external hydrostatic pressure-comparison between FEA and analytical formulae1996 - MATTAR NETO, M.; MIRANDA, C.A.J.; CRUZ, J.R.B.; SILVEIRA, R.C.