Naslov
Numerical Bending Fatigue Analysis of a Surface Hardened Spur Gears

Autori
Čular, Ivan ; Vučković, Krešimir ; Miler, Daniel ; Žeželj, Dragan

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 18th International Conference on New Trends in Fatigue and Fracture / Reis, Luis ; Freitas, Manuel ; Anes, Vitor - Lisabon : Instituto Superrior Técnico, 2018, 55-58

ISBN
978-989-20-8548-7

Skup
18th International Conference on New Trends in Fatigue and Fracture

Mjesto i datum
Lisabon, Portugal, 17.07.2018. - 20.07.2018

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
spur gear ; bending fatigue ; finite element analysis ; strain-life method ; surface hardened gears

Sažetak
Surface hardened spur gears are one of the most commonly used machine elements regarding the power transmission. During gear service life, variable and cyclic nature of the stresses at the tooth root may lead to material fatigue, commonly known as bending fatigue. The bending fatigue may cause crack initiation and consequently propagation at the tooth root fillet, eventually resulting in a tooth breakage. In this paper, the authors presented a computational model for predicting the number of cycles required for crack initiation. Two cases of driven gears are considered. Elastic finite element analysis is used to generate the numerical models which accounts for the nominal tooth root stress change during the gear meshing. Additional effects due to friction and centrifugal force are also considered. Fatigue models are generated using the strain-life approach and finite element analysis results. Mean and residual stresses, along with the local plastic deformation effects, are also considered. The bending fatigue life results are in good agreement with the experimental data from the available literature for the first case and conservative for the second.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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