4014 Prediction of Inelastic Stress-Strain Behavior of Spherical Tube Sheet

Abstract

Prediction method of inelastic stress-strain behavior was discussed for spherical tube sheet in steam generator of fast breeder reactor. Influence of curvature on macro and local stress strain behavior was focused on the basis of FEM analysis using unit cell structure. Thermal stress analysis of spherical tube sheet using equivalent solid plate modeling was carried out, and the results were compared with those using the detailed modeling considering all holes.