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Title:Numerical modelling of micro-pitting of gear teeth flanks
Authors:Fajdiga, Gorazd (Author)
Flašker, Jože (Author)
Glodež, Srečko (Author)
Hellen, Trevor K. (Author)
Files:This document has no files. This document may have a physical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Unknown ()
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:A two-dimensional computational model for simulation of contact fatigue of gear teeth flanks is presented. In the model, it is assumed that the initial crack of length 0.015 mm is initiated at the surface due to previous mechanical or heat treatment of the material as well as a consequence of the running in process. The discretized model with the initial crack is then subjected to normal contact pressure, which takes into account the elasto-hydro-dynamic (EHD) lubrication conditions, and tangential loading due to friction between contacting surfaces. The model also considers the moving contact of gear flanks, fluid trapped in the crack and residual stresses due to heat treatment of the material on crack propagation. The virtual crack extension (VCE) method, implemented in the finite element method, is then usedfor simulating the fatigue crack growth from the initial crack up to the formation of the surface pit. The computational results show that the initial surface crack of length 15 m and the considered boundary conditions lead to the appearance of very small surface pits, which can be termed as micro-pitting on gear teeth flanks. The numerical results correspond well withavailable experimental data.
Keywords:machine elements, gearing, fracture mechanics, numerical analysis, micro pitting, pitting simulation, matematical model, fatigue, contact mechanics, crack propagation
Year of publishing:2003
UDC:621.833:539.42:519.61/.64
ISSN on article:8756-758X
COBISS_ID:8462614 Link is opened in a new window
NUK URN:URN:SI:UM:DK:UUEXEHIR
Views:1647
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Record is a part of a journal

Title:Fatigue & fracture of engineering materials & structures
Shortened title:Fatigue fract. eng. mater. struct.
Publisher:Blackwell Publishing
ISSN:8756-758X
COBISS.SI-ID:584210 New window

Secondary language

Language:English
Keywords:strojni elementi, gonila, lomna mehanika, numerična analiza, mikro jamičenje, simulacija jamičenja, matematični model, utrujanje, kontaktna mehanika, širjenje razpoke


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