圧縮を受ける正方形板の最終強度に関する研究(第2報) : 初期不整の影響に対する総合的考察

概要

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When welding is applied for construction of structures, shrinkage of welded portion may produce initial imperfections, such as residual stresses and distortion, in structural elements. The distortion is accompanied by local bending stresses which correspond to the curvature of the distortion. In this 2nd report, influences of residual stresses, geometrical changes and local bending stresses of the distortion upon the behavior of a square plate subjected to a thrust were studied. A series of theoretical analyses was carried out by the finite element method. From the analyses, it was found that these factors reduce ultimate strength of the plate, and welding residual stresses reduce buckling strength remarkedly, but not so much ultimate strength. Finally, a relation between the ultimate strength and the allowable initial deflection specified by the Japan Shipbuilding Quality Standards was discussed.
社団法人日本船舶海洋工学会の論文