Abstract

As the material’s intricate stresses and strains are always shifting during phases of loading, determining
the predicted equipment working under rolling-sliding contact loads and their fatigue lives (wheels,
bearings, and gears) is particularly difficult. Another difficulty is not knowing the precise
characteristics of the material used to make the components, which is particularly noticeable. when it
comes to heat-treated components, where the material characteristics’ values can differ greatly among
the equipment. Depending on the findings of fatigue measuring involute spur gears constructed of
42CrMo4 steel that has undergone various heat treatments. According to recently published findings,

the previously suggested multiaxial fatigue life measurements methodology as reported by the Fatemi-
Socie critical plane-based crack start criterion was used to conduct fatigue life studies of the flanks of

gear teeth. Due to the lack of real cyclic and fatigue material factors, an estimating method particularly
designed for 42CrMo4 steel was used, utilizing the materials’ monotonic properties as provided in
previous studies. Very good agreement is found between investigational and computed fatigue lives, or
load carrying capacities, indicating that advanced material parameter estimation is applicable to
studies of genuine elements’ fatigue and inability under rolling sliding contact loads.

Keyword: Fatigue, gear teeth, Characteristics, Brinell Hardness, yield strength

Full Text PDF

Refrences:

1. Aberšek, B., Flašker, J., 2004. How gears break.
2. Witpress. Basan, R., Marohnić, M., 2019.
3. 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.
4. 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.
5. A novel approach to the estimation of strain life fatigue parameters, Procedia Engineering 2, 41–
426. Bäumel, A., Seeger, T., 1990.
6. Materials data for cyclic loading – Supplement 1. Elsevier, Amsterdam, Netherlands. Dowling,
N.E., 1993.
7. Mechanical behavior of materials. Prentice-Hall International, New Jersey, United States. Fatemi,
A., Socie, D.F., 1988.
8. 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.
9. 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.
10. Optimisation of hardened layer thickness on gears. Conference Proceedings of 4th Symposium
Design 96. Opatija, Croatia. Glodež, S., Ren, Z., Flašker, J., 1999.
11. 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.
12. Manson, S.S., 1965.
13. Fatigue: A complex subject – some simple approximations. Exp Mech SESA 5(7), 193–226.
Mlikota, M., Schmauder, S., 2020.
14. 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.
15. Influence of local residual stresses on fatigue crack initiation. Procedia Structural Integrity 31, 3–
7. Niemann, G., Bötsch, H., 1966.
16. Neue Versuchsergebnisse zur Zahnflanken-Tragfähigkeit von Stirnrädern aus Vergütungsstahl.
Konstruktion 12, 481-491. Pederson, R., Rice, S.L., 1961.
17. 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.
18. A calculation method for subsurface fatigue. Conference Proceedings of International Symposium
on Gearing & Power Transmissions. Tokyo, Japan. Šraml, M., Flašker, J., 2007.
19. 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.
20. 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.
21. Failure analysis of a ruptured compressor pressure vessel. Procedia Structural Integrity 31, 28–32.
Zwirlein, O., Wieland, W.P., 1983.
22. Case depth for induction hardened slewing bearing rings. International Off-Highway Meeting &
Exposition. Milwaukee: Society of Automotive Engineers, In