Fatigue assessment of a riveted shear splice based on a probabilistic model

A procedure for estimation of probabilistic fatigue S–N curves for notched structural components is described. Plain material strain–life data is used to identify a statistical Weibull strain–life model and, using an adequate elastoplastic analysis, material strain–life probabilistic curves are conv...

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Bibliographic Details
Published in:International journal of fatigue 2010-02, Vol.32 (2), p.453-462
Main Authors: De Jesus, Abílio M.P., Pinto, Hernán, Fernández-Canteli, Alfonso, Castillo, Enrique, Correia, José A.F.O.
Format: Article
Language:English
Subjects:
Applied sciences
Elastoplasticity
Exact sciences and technology
Fatigue
Fatigue (materials)
Fatigue life
Fatigue modelling
Finite element analysis
Joints
Life prediction
Mathematical models
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Probabilistic analysis
Probabilistic methods
Probability theory
Riveted connections
Shear
S– N curves
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Summary:A procedure for estimation of probabilistic fatigue S–N curves for notched structural components is described. Plain material strain–life data is used to identify a statistical Weibull strain–life model and, using an adequate elastoplastic analysis, material strain–life probabilistic curves are converted into probabilistic stress–life curves of the structural component. The performance of the proposed model is illustrated by a practical example of a riveted shear splice, from a Portuguese railway bridge, for which experimental resistance data is available. A simplified elastoplastic analysis based on the Neuber and the Glinka rules are used, supported by the results of an elastic finite element analysis of the riveted connection. The paper demonstrates the success of the proposed probabilistic model since it correlates satisfactorily with the available experimental data for the riveted connection. The achieved results confirm the proposed probabilistic model as well suited for notched structural components with a whole fatigue life dominated by crack initiation.
ISSN:0142-1123
1879-3452
DOI:10.1016/j.ijfatigue.2009.09.004