Bending fatigue crack initiation life prediction in spur gear tooth root

Opalić, Milan and Vučković, Krešimir and Žeželj, Dragan (2011) Bending fatigue crack initiation life prediction in spur gear tooth root. = Bending fatigue crack initiation life prediction in spur gear tooth root. In: 2nd International Conference of Engineering Against Fracture (ICEAF II), 22-24.06.2011., Mikonos, Grčka.

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Official URL: https://bib.irb.hr/prikazi-rad?&rad=516470

Abstract

Numerical model for bending fatigue crack initiation life prediction in spur gear tooth root is presented. Stresses are determined from two-dimensional finite element model, assuming plane stress conditions. The material, case carburized 14NiCrMo13-4 steel, is assumed to be homogenous, isotropic and linear elastic. Neuber’s rule is used to account plasticity effects. The bending fatigue crack initiation life is predicted using a strain-life approach including: surface finish, mean stress and residual stress effects. Assuming that fatigue cracks are initiated on a component’s surface, analysis is performed for all the nodes in the root fillet of the loaded tooth side. Node with the smallest life is regarded as location of potential crack initiation. Two load cases are investigated: the first one in which gear tooth is loaded with a normal cyclic load acting at the highest point of single tooth contact, and the second one in which actual gear operation is considered.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): spur gear, bending fatigue, crack initiation, strain-life approach, case carburized steel
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 100 Department of Design > 120 Chair of Machine Elements
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 19 Sep 2016 11:56
Last Modified: 14 Nov 2016 13:40
URI: http://repozitorij.fsb.hr/id/eprint/6328

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