20.500.12556/DKUM-50140 Leak-before-break analysis of a pressurizer - estimation of the elastic-plastic semi-elliptical through-wall crack opening displacement Primena koncepta procurivanja pre loma na posudu pod pritiskom - procena elasto-plastičnog otvaranja polu-eliptične prolazne prsline The work presents methods to estimate elastic-plastic semi-elliptical through-wall Crack Opening Displacement (COD) for the Leak-Before-Break analysis of a pressurizer. Usually proposed methods are based on GE/EPRI approach or on the reference stress and J-integral as stress intensity factor (SIF) along the crack tip. J-integral calculation provides the value of SIF ateach node of mesh along the crack tip, where values vary from the surface to middle section of material in respect to material properties. COD value is calculated through thickness along the centre of crack. The COD values are less sensitive to distance from crack tip and material properties. The engineering approach for the calculation of J-integral by using COD values and material full stress-strain data is given. COD values are proportional to surface length of semi-elliptical through wall crack of the pressurizer mehanika loma semi-elliptical through-wall crack crack opening displacement GE/EPRI approach leak-before-break analysis reference stress approach true false false Angleški jezik Angleški jezik Delo ni kategorizirano 2015-07-10 12:36:10 2015-07-10 12:36:10 2022-05-28 03:08:41 2019-07-10 21:45:04 2012 0 0 Str. 30-34 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 620.1/.2:539.42 16183062 16182806 1451-3749 URN:SI:UM:DK:TB5KA7KB http://divk.inovacionicentar.rs/ivk/ivk12/ivk1201-2.html 1 https://dk.um.si/Dokument.php?lang=slv&id=74698 Fakulteta za strojništvo 0 0 0