Listar por autor "Antunes, Fernando Ventura"
Mostrando ítems 1-8 de 8
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3D numerical study of the transient behaviour on plasticity induced crack closure
Camas-Peña, Daniel
; Antunes, Fernando Ventura; López-Crespo, Pablo; González-Herrera, Antonio (2019-07-05)
The numerical analysis of the plasticity induced crack closure requires the development of the plastic wake. Transient behaviour is observed when the crack starts to grow. The plastic wake length has an influence on the ... -
A numerical analysis of the plastic wake influence on plasticity induced crack closure
Camas-Peña, Daniel; Antunes, Fernando Ventura; López-Crespo, Pablo; González-Herrera, Antonio (2017-09-18)
Fatigue crack closure has been studied by means of finite element method since long time ago. Most work has been performed considering bi-dimensional models. Lately, the use of threedimensional models has been extended. ... -
A numerical analysis of the relation between CTOD and fatigue crack growth
Camas-Peña, Daniel; Antunes, Fernando Ventura; Rodrigues, S.M. (2016-03-30)
El cálculo de la vida a fatiga durante la etapa de propagación de la grieta se suele realizar relacionando da/dN con ΔK. Sin embargo, la influencia que en estos análisis tiene el parámetro ΔK debe recaer en algún otro ... -
Análisis numérico bidimensional del efecto de campos de tensiones no uniformes en grietas en modo mixto
Camas-Peña, Daniel; García, R.; Antunes, Fernando Ventura; Moreno, B.; López-Crespo, Pablo; Zapatero-Arenzana, José Arturo[et al.] (2022)
La probeta con taladro centrado es un tipo de geometría a partir de la cual las grietas se propagan con frecuencia. En algunos casos, el análisis combinado de carga en modo mixto I y II tiene cierta relevancia industrial. ... -
Fatigue crack propagation analysis in 2024-T351 aluminium alloy using nonlinear parameters
Borges, Micael Frias; López-Crespo, Pablo; Antunes, Fernando Ventura; Moreno-Morales, María Belén; Prates, P. A.; Camas-Peña, Daniel; Neto, Diogo Mariano[et al.] (ELSEVIER, 2021-12)
In this work, fatigue crack growth (FCG) in the 2024-T351 aluminium alloy is studied using the plastic CTOD range, Δδp. Experimental tests were performed on 12 mm thick CT specimens in order to obtain FCG rate and in ... -
Influence of the mesh size on plastic CTOD
Sanchez-Mancera, J.; Camas-Peña, Daniel; Prates, P.A.; Antunes, Fernando Ventura (ICSI2021 book of abstracts: PMGP Moreira and PJS Tavares, 2021)
The Crack Tip Opening Displacement (CTOD) is an elastic-plastic fracture mechanics parameter usually employed as a measurement of fracture toughness and to explain the fatigue crack growth. This parameter can be decomposed ... -
Numerical analysis of the influence of the last cycle scheme on plasticity induced crack closure
Camas-Peña, Daniel; Antunes, Fernando Ventura; Moreno-Morales, María Belén; González-Herrera, Antonio (2019-09-24)
Plasticity induced crack closure is considered the main mechanism related to the premature contact of the crack flanks when a crack grows under cyclic loadings. This phenomenon has been studied numerically since the early ... -
Through thickness evolution of crack tip plasticity
Camas-Peña, Daniel; López-Crespo, Pablo; Antunes, Fernando Ventura; Yates, John R. (2017-07-19)
Experimental methods to measure fracture mechanics parameters tend to provide information from or about the surface of cracked components. However, information about the interior of the component is key to understanding ...