20.500.12556/DKUM-27665 Numerical procedure for predicting the rolling contact fatigue crack initiation A computational numerical model for contact fatigue damage analysis of mechanical elements is presented in this paper. The computational approach is based on continuum mechanics, where a homogenous and elastic material model isassumed in the framework of the finite element method analysis. Cyclic contact loading conditions are simulated with moving Hertzian contact pressure. The time-depending loading cycles are defined for each observed material point on and under the contact area. Furthermore, the influence of friction upon rolling-sliding contact loading cycles is analysed in detail, using Coulombćs friction law. The model for prediction of the number of loading cycles, required for initial fatigue damages to appear, is based on Coffin-Manson relations between deformations and loading cycles, and includes characteristic material fatigue parameters. As a general example, the model isused to analyse a fundamental contact problem of a cylinder and flat surface, which is usually a substitutional model for analysing real mechanicalproblems. However, the results concerning the identification of critical material points and the number of loading cycles, required for initial fatigue damages to appear at those points, are the main purpose of thepresented study. machine elements gears contact problems contact fatigue crack initiation numerical modelling strojni elementi zobniška gonila kontaktni problemi kontaktna utrujenost začetek razpoke numerično modeliranje true false false Angleški jezik Angleški jezik Neznano 2012-06-01 11:56:12 2012-06-01 11:56:12 2022-04-15 03:45:18 2019-07-10 12:19:50 2003 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.833:539.388.1 7911702 0142-1123 URN:SI:UM:DK:EOWB3IUS http://dx.doi.org/10.1016/S0142-1123(03)00019-7 1 https://dk.um.si/Dokument.php?lang=slv&id=36981 Fakulteta za strojništvo 0 0 0