Numerical Analysis of Stress Concentration in Non-uniformly Corroded Small-Scale Specimens

作     者：J.Kodvanj Y.Garbatov C.Guedes Soares J.Parunov J.Kodvanj;Y.Garbatov;C.Guedes Soares;J.Parunov

作者机构：Faculty of Mechanical Engineering and Naval ArchitectureUniversity of ZagrebZagrebCroatia Centre for Marine Technology and Ocean Engineering(CENTEC)Instituto Superior TécnicoUniversidade de LisboaAv.Rovisco Pais1049-001 LisbonPortugal 

出 版 物：《Journal of Marine Science and Application》 (船舶与海洋工程学报（英文版）)

年 卷 期：2021年第20卷第1期

页      面：1-9页

核心收录：

学科分类：08[工学] 082402[工学-轮机工程] 0824[工学-船舶与海洋工程] 

基　　金：The work is supported by the Croatian Science Foundation within the projects IP-2013-11-8658 and lP-2019-04-2085 This work is also performed within the scope of the Strategic Research Plan of the Centre for Marine Technology and Ocean Engineering(CENTEC) which is financed by the Portuguese Foundation for Science and Technology(Fundação para a Ciência e Tecnologia-FCT)under contract UIDB/UIDP/00134/2020 

主　　题：Fatigue life Fatigue tests Corrosion Stress concentration factors Finite element method 

摘      要：A numerical evaluation of stress concentrations of corroded plate surfaces of small-scale corroded steel specimens is compared with the experimentally estimated *** specimens were cut from a steel box girder,which was initially corroded in real seawater *** surface of all corroded specimens was analysed applying photogrammetry techniques,and a statistical description of an idealised corroded surface of each specimen was *** lives of specimens are determined from the fatigue *** on experimentally obtained fatigue lives,the stress concentration factors are calculated concerning the ideally smooth *** correlation between the statistical parameters of the corroded specimen surfaces and the estimated stress concentration factors is *** corroded surfaces,converted in graphical format,are then used for the finite element modelling in ABAQUS software,and stress concentration factors are estimated from the finite element results.A convergence study is performed to determine the appropriate finite element mesh *** between experimentally obtained and numerically estimated stress concentration factors is performed as well as correlation analysis between actual and finite element predicted crack locations.