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The Influence of Residual Stresses on Fatigue Crack Growth Rate in Stiffened Panels (CROSBI ID 600948)

Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija

Božić, Željko ; Schmauder, Siegfried ; Wolf, Hinko The Influence of Residual Stresses on Fatigue Crack Growth Rate in Stiffened Panels // Proceedings of 2nd Mediterranean Conference & New Challenges on Heat Treatment and Surface Engineering / Smoljan, Božo ; Matijević, Božidar (ur.). Zagreb: Hrvatsko društvo za toplinsku obradu i inženjerstvo površina, 2013. str. 435-444

Podaci o odgovornosti

Božić, Željko ; Schmauder, Siegfried ; Wolf, Hinko

engleski

The Influence of Residual Stresses on Fatigue Crack Growth Rate in Stiffened Panels

This paper presents models for predicting fatigue crack propagation in welded stiffened panels. The Mode I total stress intensity factor Ktot values with respect to crack length were determined based on the superposition rule of linear elastic fracture mechanics by using finite element method. The FEM models included idealized residual stress distribution patterns. By using the Paris power law equation the crack propagation life was simulated for a welded stiffened panel specimen and compared with results of cyclic tension fatigue tests. Numerical simulations demonstrated that tensile welding residual stresses in the vicinity of stiffeners increase the Ktot values and the crack growth rate. Compressive residual stresses between the stiffeners reduce the fatigue crack growth rate. This was in good agreement with experimental results. The results emphasized the significance of residual stresses in the assessment of the fatigue crack growth life in welded stiffened panels.

Modeling; Fatigue; Crack propagation; Residual stress

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Podaci o prilogu

435-444.

2013.

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objavljeno

978-953-7690-02-1

Podaci o matičnoj publikaciji

Proceedings of 2nd Mediterranean Conference & New Challenges on Heat Treatment and Surface Engineering

Smoljan, Božo ; Matijević, Božidar

Zagreb: Hrvatsko društvo za toplinsku obradu i inženjerstvo površina

Podaci o skupu

2nd mediterranean conference &new challenges on heat treatment and surface engineering

poster

11.06.2013-14.06.2013

Cavtat, Hrvatska; Dubrovnik, Hrvatska

Povezanost rada

Strojarstvo