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Influence of inclusion interfaces on surface pittingRen, Zoran ; Glodež, SrečkoA new model is described for the simulation of the surface fatigue process in the contact area of spur gears. The model considers the conditions required for subsurface fatigue crack initiation and ... allows for proper simulation of fatigue crack propagation under contact loading. The theory of dislocation motion along inclusion surfaces is studied in some detail and is used to describe the process of fatigue crack initiation, where the microstructure of a material plays a crucial role. The theory of short crack growth is then used for the simulation of the fatigue crack growth. The stress field in the contact area and the fuctional relationship between the stress intensity factor and crack length are determined by the finite element method. The 2-dimensional equivalent model of two cylinders is used in the numerical simulations of crack initiation and crack propagation in the contact area, which reduces the required computation time significantly. On the basis of computational results, and with consideration of some particular material parameters, the service life of gear teeth with regard to pitting is estimatd.The model developped is applied to a real spur gear pair, which is also tested experimentally. A comparison of numerical and experimental results reveals good agreement, and it may be concluded that the model developed is appropriate for determining the pitting resistance of gear teeth.Source: Technology, law and insurance. - ISSN 1359-9372 (4, 1999, str. 137-144)Type of material - article, component partPublish date - 1999Language - englishCOBISS.SI-ID - 4659990
Author
Ren, Zoran |
Glodež, Srečko
Other authors
Flašker, Jože
Topics
strojni elementi |
zobniška gonila |
čelni zobniki |
kontaktna površina |
jamičenje |
utrujenost |
življenjska doba |
napoved |
lomna mehanika |
numerična analiza |
eksperimentalna analiza |
machine elements |
spur gears |
pitting |
contact area |
fatigue |
service life |
prediction |
fracture mechanics |
computational analysis |
experimental analysis
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Database name | Field | Year |
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Ren, Zoran | 08779 |
Glodež, Srečko | 13068 |
Flašker, Jože | 03014 |
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