船体不連続部の最適形状について(第4報) : 2軸荷重をうける無限平板中の開口

概要

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This report is concerned with optimum configuration of a hole from the standpoint of the minimum stress concentration in an infinity elastic plate under biaxial loading. Investigating the fundamental property of tangential stress distribution around a hole, we clarify the optimum stress distribution around a hole which have the minimum value of stress concentration ratio must be stepwise distrbution corresponding to the loading condition. We employ the conformal mapping technique in obtaining the optimum configuration of a hole having that of stress distribution. As the result of investigation, the relation between aspect ratio of hole and the minimum stress concentration ratio are shown for various biaxial loading condition. For practical use of design of a hole, we propose the simple mathematical description of hole whose stress concentration ratio is closer to the minimum value.
社団法人日本船舶海洋工学会の論文
1990-03-25