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Title:Evaluation of the service life of gears in regrad to surface pitting
Authors:Glodež, Srečko (Author)
Aberšek, Boris (Author)
Flašker, Jože (Author)
Ren, Zoran (Author)
Files:URL http://dx.doi.org/10.1016/S0013-7944(03)00049-3
Work type:Unknown ()
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:A computational model for determining the service life of gear teeth flanks in regard to surface pitting is presented. The model considers the material fatigue process leading to pitting, i.e. the conditions required for the short fatigue crack propagation originating from the initial crack in a single material grain. In view of small crack lengths observed in surface pitting, the simulation takes into account the short crack growth theory. The stress field in the contact area and the required functional relationship between thestress intensity factor and the crack length are determined by the finite element method. An equivalent model of two contacting cylinders is used for numerical simulations of crack propagation in the contact area. On the basis of numerical results, and with consideration of some particular material parameters, the probable service life period of contacting surfaces is estimated for surface curvatures and loadings that are most commonly encountered in engineering practice.
Keywords:machine elements, gears, pitting, fatigue, short crack growth, numerical analysis, service life
Year of publishing:2004
UDC:621.833: 539.388.1
ISSN on article:0013-7944
COBISS_ID:8436758 Link is opened in a new window
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Record is a part of a journal

Title:Engineering fracture mechanics
Shortened title:Eng. fract. mech.
Publisher:Pergamon Press.
COBISS.SI-ID:25396736 New window

Secondary language

Keywords:strojni elementi, zobniška gonila, jamičenje, utrujanje, rast kratke razpoke, numerična analiza, življenjska doba


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