PSI - Issue 39

Slobodanka Boljanović et al. / Procedia Structural Integrity 39 (2022) 624 – 631 Slobodanka Boljanović et al. / Structural Integrity Procedia 39 (2022) 624 – 631

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5. Conclusions Despite the fact that large moving systems are extremely used in various engineering sectors, modern literature still lacks detailed information regarding their bearing capacities and fatigue design parameters to ensure satisfactory performances under complex loads. Therefore, this research work discusses a novel analytical framework for analyzing the detrimental effects of quarter-elliptical flaws. Relevant outcomes successfully experimentally verified demonstrate that the computational tool provides a correct interpretation of the failure strength in terms of fatigue life and crack path, enabling reliable damage tolerance-based design and in-service maintenance assessments. Acknowledgements The present research work was supported by the Serbian Ministry of Education, Science and Technological Development through the Mathematical Institute of the Serbian Academy of Sciences and Arts, Belgrade and the COST Association, Brussels, Belgium within the Action CA18203, which is gratefully acknowledge.

Fig. 5. Failure endurance analysis ( R = 0.2): (a) a vs. N and (b) b vs. N (1 – P max = 50225 N, 2 – P max = 45659 N, 3 – P max = 41508 N). Calculated curves are the present outcomes.

Fig. 6. Failure endurance analysis ( R = 0.1): (a) a vs. N and (b) b vs. N (1 – t = 4 mm, 2 – t = 5.2 mm, 3 – t = 6.76 mm). Calculated curves are the present outcomes.