PSI - Issue 62

Annarosa Lettieri et al. / Procedia Structural Integrity 62 (2024) 789–795 Author name / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 3. Influence of the connection typology: (a) double- and (b) single-shear plane configuration. In order to investigate the influence of the geometrical properties on the fatigue behaviour of riveted joints, Fig. 4(a),(b) and (c) illustrate the mean fatigue resistance corresponding to a fixed slope of 5 ( Δ  C,mean (m=5) ) as function of e 1 / d , e 2 / d, and w / d , respectively. Notably, Δ  C,mean (m=5) represents the average stress of each fatigue test result corresponding to 2 million cycles based on an inverse slope of 5. Linear regressions have been included to quantify the relationships between the investigated parameters. As it is possible to observe, among the geometrical properties, the Δ  C,mean (m=5) is more influenced by the e 2 / d dimensionless quantity.

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Fig. 4. Influence of the (a) e 1 / d ; (b) e 2 / d and (c) w / d ratios.

4. Conclusion This paper summarized the result of a theoretical and experimental study devoted to investigate the high-cycle fatigue behaviour of riveted shear splices. The results of fatigue tests have been statistically analysed to investigate the influence of the geometrical features and connection type on the fatigue resistance of riveted shear splices. Experimental results have also been collected from the literature. Additionally, the experimental characterisation of the fatigue behaviour of single- and double-shear riveted splices has been performed at the Strength Laboratory of the University of Salerno within activities envisaged by the Agreement between the High Council of Public Works (CSLLPP) and the ReLUIS Consortium. The experimental results have been compared with the curves currently used to evaluate the fatigue resistance of riveted structural details, confirming the adequacy of the recent Taras proposal. Finally, the influence of parameters such as geometrical properties and joint configuration on the fatigue strength has been evaluated, pointing out the main characteristics influencing the fatigue resistance of the investigated details. The following outcomes can be made: i ) asymmetrical joint configurations exhibit fatigue strength almost 50% lower than symmetrical connections; ii ) among the investigated geometrical properties, a more significant influence on the fatigue