Naslov
Influence of different gear load models on crack propagation

Autori
Podrug, Srđan ; Jelaska, Damir

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

Izvornik
Proceedings of DESIGN 2006 / Marjanović, Dorian - Zagreb : FMENA, 2006, 983-990

Skup
9th International Design conference DESIGN 2006

Mjesto i datum
Cavtat, Hrvatska, 15.05.2006. - 19.05.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
moving load ; gear tooth root ; crack closure

Sažetak
In conventional fatigue models of the gear tooth root it is usual to approximate actual gear load with pulsating force acting in the highest point of the single tooth contact. However, in actual gear operation, the magnitude as well as the position of the force, changes as the gear rotates through the mesh. A study to determine the effect of moving gear tooth load on crack propagation predictions was performed. Finite element method and linear elastic fracture mechanics theories are used for the simulation of the fatigue crack growth. Moving load produces a non-proportional load history in a gear's tooth root. Consequently, the maximum tangential stress theory will predict a unique kink angle for each load increment, but herein crack’ s trajectory is computed at the end of the load cycle. An approach that accounts for fatigue crack closure effects is developed to propagate crack under non-proportional load.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA