Listar por autor "Antunes, Fernando Ventura"
Mostrando ítems 1-12 de 12
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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 ... -
Multiaxial Fatigue Life Prediction on S355 Structural and Offshore Steel Using the SKS Critical Plane Model.
Sánchez-Cruces, Manuel Alejandro; López-Crespo, Pablo; Moreno-Morales, María Belén; Antunes, Fernando Ventura; Antunes, Fernando Ventura (MDPI, 2018-12-13)
This work analyses the prediction capabilities of a recently developed critical plane model, called the SKS method. The study uses multiaxial fatigue data for S355-J2G3 steel, with in-phase and 90◦ out-of-phase sinusoidal ... -
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 ... -
Study of the notch fatigue behaviour under biaxial conditions of maraging steel produced by selective laser melting.
Sánchez-Cruces, Manuel Alejandro; Exposito, Alfonso; Branco, Ricardo; Borrego, L.P.; Antunes, Fernando Ventura; López-Crespo, Pablo[et al.] (Elsevier, 2022-07-05)
The current work aims to characterise the fatigue behaviour of an additively manufactured maraging steel, AISI 18Ni300. This is a class of high-strength steel widely used in biomedical, aircraft, aerospace, offshore, and ... -
Three-dimensional fatigue crack closure numerical modelling: Crack growth scheme
González-Herrera, Antonio; Camas-Peña, Daniel; García-Manrique-Ocaña, José Manuel; Antunes, Fernando Ventura (Elsevier, 2020)
Numerical models based on finite element method have been employed to analyse the plasticity induced crack closure phenomenon for a long time. These numerical analyses require the development of a plastic wake. During ... -
Three-dimensional numerical study of thickness effect on plastic CTOD and monotonic plastic zone in an aluminium CT specimen
Camas-Peña, Daniel; Branco, Ricardo; Antunes, Fernando Ventura; Neto, Diogo Mariano (Elsevier, 2023-10-10)
This work is a numerical study of CT specimens with straight cracks and different thickness values submitted to different load levels, which aims to analyse the shape and dimension variations of the monotonic yielded area ... -
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 ...