Strength of Elliptical Plane Plate Provided with Circular Hole Eccentrically Located with Respect to It

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  • 偏心円孔を有するだ円形平板の強さ
  • ヘンシンエンコウ オ ユウスル ダエンケイ ヘイバン ノ ツヨサ

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No definite analysis has not been undertaken yet regarding the strength of an elliptical plate, provided with a circular hole and subjected to uniformly-distributed load. For the purpose of clarifying this problem, the authors picked up an elliptical plate rigidly fixed in its periphery and having a circular hole, the center of which is positioned on the major axis of ellipse, but eccentrically with respect to the minor one. As a result of the experimental analysis on the above specimen, the following were clarified and moreover the calculating formulae in simple and practical form were deduced. (1) The maximum stress is observed at the inner fixing end of the maximum span along the major axis of ellipse. (2) The maximum deflection is observed at the portion slightly closer to the inner fixing end from the center of the above mentioned span. (3) The calculated values closely coincide with the theoretical values.

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