Results 111 to 120 of about 423 (159)

Global ensemble projections reveal trophic amplification of ocean biomass declines with climate change. [PDF]

open access: yesProc Natl Acad Sci U S A, 2019
Lotze HK   +34 more
europepmc   +1 more source

Breastfeeding and its dimensions: an integrative review of health students' knowledge. [PDF]

open access: yesRev Bras Enferm
Peres PLP   +7 more
europepmc   +1 more source

Efficient FEM-DBEM coupled approach for crack propagation simulations [PDF]

open access: yesTheoretical and Applied Fracture Mechanics, 2017
Abstract The paper deals with a FEM-DBEM hybrid methodology applied to crack propagation simulations. The method allows to simulate cracks propagation by means of Finite Element Method (FEM) and Dual Boundary Element Method (DBEM), coupled in a procedure that optimise computational effort and accuracy.
Venanzio Giannella, R Citarella
exaly   +6 more sources

DBEM crack propagation in friction stir welded aluminum joints [PDF]

open access: yesAdvances in Engineering Software, 2016
This paper deals with the simulation of multiple crack propagation in friction stir welded butt joints and the aim is to assess the influence of process induced residual stresses on the fatigue behavior of the assembly. The distribution of the process induced residual stresses is mapped by means of the contour method; then, the computed residual stress
R Citarella   +2 more
exaly   +6 more sources

Thermo-mechanical crack propagation in aircraft engine vane by coupled FEM–DBEM approach

open access: yesAdvances in Engineering Software, 2014
New generation jet engines are subject to severe reduced fuel consumption requirements. This usually leads to thin components in which damage issues such as thermo-mechanical fatigue, creep and crack propagation can be quite important. The combination of mechanical and thermal stresses usually leads to mixed-mode loading. Consequently, a suitable crack
R Citarella, M Lepore
exaly   +5 more sources

MSD crack propagation by DBEM on a repaired aeronautic panel

open access: yesAdvances in Engineering Software, 2011
This paper focuses on the use of the Dual Boundary Element Method (DBEM), as implemented in a commercial code (BEASY), to investigate the damage tolerance performance of a riveted repair flat aeronautic panel, realised and tested in the context of the European project ''IARCAS'' (VI framework).
R Citarella
exaly   +3 more sources

Fatigue crack growth in a compressor stage of a turbofan engine by FEM-DBEM approach

open access: yesProcedia Structural Integrity, 2018
Abstract In this work, the fatigue crack-growth process in a rotating disk of an aircraft gas turbine engine has been simulated. The considered crack nucleated in the attachment between a blade and the disk of a compressor stage, both made of a two-phase titanium alloy.
Venanzio Giannella, Michele Perrella
exaly   +5 more sources

Comparison of DBEM and FEM crack path predictions in a notched shaft under torsion

open access: yesEngineering Fracture Mechanics, 2010
Abstract The rather complex 3D fatigue crack growth behaviour of two anti-symmetric “bird wing” cracks, initiated from the two crack front corner points of a notched shaft undergoing torsion, is investigated by the Dual Boundary Element Method (DBEM) and by the Finite Element Method (FEM).
R Citarella
exaly   +5 more sources

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