Srečko Glodež (Author), Boris Aberšek (Author), Jože Flašker (Author), Zoran Ren (Author)

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

strojni elementi;zobniška gonila;jamičenje;utrujanje;rast kratke razpoke;numerična analiza;življenjska doba;machine elements;gears;pitting;fatigue;short crack growth;numerical analysis;service life;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
UDC: 621.833: 539.388.1
COBISS: 8436758 Link will open in a new window
ISSN: 0013-7944
Views: 1808
Downloads: 24
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Other data

Secondary language: English
Secondary keywords: strojni elementi;zobniška gonila;jamičenje;utrujanje;rast kratke razpoke;numerična analiza;življenjska doba;
URN: URN:SI:UM:
Pages: str. 429-438
Volume: ǂVol. ǂ71
Issue: ǂiss. ǂ4/6
Chronology: 2004
ID: 8718677