3D thermal elasto plastic analysis of ITER divertor high heat flux elements

3D thermo-elasto-plastic finite element (FE) analysis of high heat flux ele ments (HHFEs) stress slate and estimation of damage levels have been perfor med. The models with two types of armour under several thermal load regimes have been investigated. Carried out analysis of 3D HHFEs thermo-elasto-plastic problems: shows the necessity to take into account correct dependence of thermo-mecha nical properties on temperature in order to obtain reliable results; allows to estimate 3D stress state of HHFEs, dimensions of plastic zones an d their evolution at cyclic thermal loading; points to actuality of using special high-accurate numeric methods for solu tion of nonlinear problems; allows to estimate possibility of using 2D model; allows to estimate damage of HHFEs based on continual concept taking into a ccount load history.