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Parametric study of surface pitting of contacting mechanical elementsFajdiga, Gorazd ; Flašker, Jože ; Glodež, SrečkoThe paper describes a general computational model for simulation of surface pitting of mechanical elements subjected to contact loading conditions. In the model it is assumed that the initial crack ... of length 0.015 mm is initiated at the contacting surfaces due to previously thermal, mechanical treatment of the material or running in process. The discretised model with the initial crack is then subjected to normal contact pressure, which takes into account the EHD lubrication conditions and tangential loading due to friction between contacting surfaces. The model accounts also for the influence of fluid trapped in the crack on crack prppagation. The virtual crack extension VCE method within FEM analysis is then used for 2 dimensional simulation of fatigue crack propagation from the initial crack up to the formation of the surface pit. The pit shapes and relationships between the stress intensity factor and crack length are determined for various combinations of contacting surface curvatures and loadings. The comparison of computational and available experimental results shows that the proposed model reliably simulates the surface fatigue crack growth under contact loading and can be used for computational predictions of surface pitting for various contacting mechanical elements.Source: Advances in fracture and damage mechanics II (Str. 251-256)Type of material - conference contributionPublish date - 2001Language - englishCOBISS.SI-ID - 6562070
Author
Fajdiga, Gorazd |
Flašker, Jože |
Glodež, Srečko
Topics
strojni elementi |
zobniška gonila |
kontaktni problemi |
jamičenje |
rast utrujenostne razpoke |
simulacija |
model |
machine elements |
gears |
contact problems |
pitting |
fatigue crack growth |
simulation |
model
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Fajdiga, Gorazd | 15683 |
Flašker, Jože | 03014 |
Glodež, Srečko | 13068 |
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