20.500.12556/DKUM-25910-b9581c53-0fbe-471a-8106-89158ee4aab8 Pitting formation due to surface and subsurface initiated fatigue crack growth in contacting mechanical elements A computational model for simulation of surface and subsurface initiated fatigue crack growth due to contact loading is presented. The model is based on fracture mechanics theory where the required materials properties are obtained from common fatigue tests. For computational simulations an equivalent model of two contacting cylinders is used instead of simulating theactual contact of mechanical elements. The discretised model with the initial crack on or under the surface 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 considers also the moving contact of mechanical elements and for the surface initiated crack also the fluid trapped in the crack. The virtual crack extension method, implemented in the finite element method is then used for simulating the fatigue crack growth from the initial crack up to the formationof the surface pit. The numerical results correspond well with available experimental data. The described model can be used for simulation ofpitting phenomenon of contacting mechanical elements like gears, bearings, wheels, etc. fracture mechnaics machine elements gears contact fatigue pitting subsurface crack initiation computational analysis lomna mehanika strojni elementi zobniki kontaktno utrujanje jamičenje podpovršinska razpoka numerična analiza true false false Angleški jezik Angleški jezik Neznano 2012-05-31 11:26:21 2012-05-31 11:26:21 2023-08-16 14:40:18 2023-12-31 03:28:10 2007 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.833:539.388.1 11227670 0043-1648 URN:SI:UM:DK:PT1HWURK http://dx.doi.org/10.1016/j.wear.2006.11.016 1 https://dk.um.si/Dokument.php?lang=slv&id=34797 Fakulteta za strojništvo 0 0 0