球面接触を有する円柱状黒鉛構造物の健全性評価

概要

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A support post, which is used as a permanent sore-support eomponent in the High Temperature Engineering Test Reactor (HTTR), is a cylindrical graphite component with spherical contact and one of the most essential elements for the integrity of the core. Therefore, the support post was examined to verify its structural integrity using full-scale and 1/2-scale models. Moreover the elastic-plastic stress was calculated by the FEM code "ABAQUS" under a two-dimensional axissymmetric condition.(1)The inclination angle of support post has little effect on the fracture load in the range from 0 to 1 degree.(2)The trength of support post was not affected by the cyclic loads which take account of the seismic load.(3)The fracture load of the support post which was oxidized to simulate the air ingress accident in the HTTR is suffcciently larger than the maximum design load.(4)It is confirmed from there results that the support post has asufficient structural integryity.
社団法人日本材料学会の論文
1993-01-15