PSI - Issue 46

Robert Basan et al. / Procedia Structural Integrity 46 (2023) 62–67 Robert Basan et al. / Structural Integrity Procedia 00 (2019) 000–000

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4. Conclusions Expressions for estimation of required fatigue data have been developed on material datasets completely independent from the material data available in the experimental study of analyzed gear pairs. Considering that gears’ materials were quite similar and that individual gear pairs were loaded differently, it can be concluded that results of the present studies show quite good agreement between experimental and calculated durability of analized gear pairs. With validity of multiaxial fatigue life calculation model based on Fatemi-Socie (FS) critical plane crack initiation criterion already confirmed in previous analyses and studies, it seems that selected estimation method and related expressions can be successfully applied for estimation of advanced material parameters in fatigue and failure analyses of actual components subjected to rolling-sliding contact loading. Further analyses and validations will be performed with extension to numerical simulations and studies of surface-hardened components whose material and related properties and parameters vary with the distance from the surface. Acknowledgements This work has been supported in part by Croatian Science Foundation under the project IP-2020-02-5764 and by the University of Rijeka under the project number uniri-tehnic-18-116. References Aberšek, B., Flašker, J., 2004. How gears break. Witpress. Basan, R., Marohnić, M., 2019. Multiaxial fatigue life calculation model for components in rolling - sliding line contact with application to gears. Fatigue Fract Eng Mater Struct, 1–16. Basan, R., Marohnić, T., Franulović, M., 2015. Estimation of Fatigue Parameters of 42CrMo4 Steels. Proceedings of the 36th International Conference on Mechanics of Materials. Darmstadt, Germany. Basan, R., Rubeša, D., Franulović, M., Križan, B., 2010. A novel approach to the estimation of strain life fatigue parameters, Procedia Engineering 2, 41–426. Bäumel, A., Seeger, T., 1990. Materials data for cyclic loading – Supplement 1. Elsevier, Amsterdam, Netherlands. Dowling, N.E., 1993. Mechanical behavior of materials. Prentice-Hall International, New Jersey, United States. Fatemi, A., Socie, D.F., 1988. A critical plane approach to multiaxial fatigue damage including out-of-phase loading. Fatigue Fract Eng Mater Struct 11, 149–165. Friederici, V., Schumacher, J., Clausen, B., 2021. Influence of local differences in microstructure and hardness on the fatigue behaviour of a slewing bearing steel. Procedia Structural Integrity 31, 8–14. Glodež, S., Flašker, J., Ren, Z., Pehan, S., 1996. Optimisation of hardened layer thickness on gears. Conference Proceedings of 4th Symposium Design 96. Opatija, Croatia. Glodež, S., Ren, Z., Flašker, J., 1999. Surface fatigue of gear teeth flanks. Comput Struct 73, 475-483. Hyde, R.S., 1996. Contact fatigue of hardened steel, in ASM Handbook Vol. 19, “Fatigue and Fracture”. ASM International, 1996. Manson, S.S., 1965. Fatigue: A complex subject – some simple approximations. Exp Mech SESA 5(7), 193–226. Mlikota, M., Schmauder, S., 2020. A Newly Discovered Relation between the Critical Resolved Shear Stress and the Fatigue Endurance Limit for Metallic Materials. Metals 10, 803. Mlikota, M., Schmauder, S., Dogahe, K., Božić, Ž., 2021. Influence of local residual stresses on fatigue crack initiation. Procedia Structural Integrity 31, 3–7. Niemann, G., Bötsch, H., 1966. Neue Versuchsergebnisse zur Zahnflanken-Tragfähigkeit von Stirnrädern aus Vergütungsstahl. Konstruktion 12, 481-491. Pederson, R., Rice, S.L., 1961. Case crushing of carburized and hardened gears. Transactions of SAE. Roessle, M.L., Fatemi, A., 2000. Strain–controlled fatigue properties of steels and some simple approximations. Int J Fatigue 22, 495–511. Sandberg, E., 1981. A calculation method for subsurface fatigue. Conference Proceedings of International Symposium on Gearing & Power Transmissions. Tokyo, Japan. Šraml, M., Flašker, J., 2007. Computational approach to contact fatigue damage initiation analysis of gear teeth flanks. Int J Adv Manuf Tech 31, 1066-1075. Šraml, M., Flašker, J., Potrč, I., 2003. Numerical procedure for predicting the rolling contact fatigue crack initiation. Int. J. Fatigue 25, 585-595. Vukelic, G., Vizentin, G., Bozic, Z., Rukavina, L., 2021. Failure analysis of a ruptured compressor pressure vessel. Procedia Structural Integrity 31, 28–32. Zwirlein, O., Wieland, W.P., 1983. Case depth for induction hardened slewing bearing rings. International Off-Highway Meeting & Exposition. Milwaukee: Society of Automotive Engineers, Inc.