Stresses and strains in the steel containment resulting from transient pressure and temperature loading during loss-of-coolant accident

Inelastic analysis of cylindrical steel containment vessels under internal accident conditions

“…Greek letters α force-state parameter β temporal integration factor ε θ thermal elongation of steel η inelastic reduction factor θ nodal temperaturė θ nodal temperature rate θ g gas temperature Θ i , Θ j beam-column end rotations λ n thermal conductivity of the steel µ s coefficient of heat transfer υ s steel specific heat ρ axial load ratio ρ s unit mass of steel σ y yield strength cluding the application of analytical (Hosemann et al, 1984) and sophisticated numerical techniques based on the finite element method (FEM) (Gruner et al, 1985;Robbe et al, 2003). During an accident resulting from a loss-of-coolant accident (LOCA) for instance, containment structures may experience load combinations beyond their design limit.…”