鋼製部分球形殻の弾塑性座屈耐力に関する解析的研究

概要

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The main aim of this paper is to present several "elastic-plastic buckling strength" of uniformly pressurized perfect and imperfect steel spherical caps by using F. E. M. with updated Lagrangian Jaumann stress (corotational stress) rate formulation. Numerical examples include asymmetrically imperfect caps. Through parametric studies, the elastic-plastic buckling characteristics, especially stress distributions and yieldings are also illustrated. Numerical results are normalized and plotted against slenderness parameters. The knockdown factors are also examined by giving inward dimple type imperfections and asymmetric pieshaped imperfections. A comparison is made, in view of buckling stresses, with the values given by buckling strength curves in the codes and with past experimental and analytical results.
社団法人日本建築学会の論文
1996-01-30