ひずみゲージを用いた実構造における切欠部付近の応力状態に対する簡便推定法 : 第1報, 面内荷重を受ける板

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In this paper, the authors propose a simple method for estimating the stress field near a notch in a plate under in-plane loading with strain gages. In this method, the stress field near a notch in practical and complicated structures can be estimated easily by determining the unknown coefficients of stress field expressions in a plate containing a free circular hole that is inscribed in the notch root. For this purpose, experimentally, it is necessary to measure only strain values at four points on a cireular are whose radius is 1.5 times the notch root radius using rosette-type strain gages. And the unknown coeffeients are determined from these strain values with the method of least squares. We have demonstrated this method using eight types of the notched plates that differ in shape. Consequently, estimation crrors were significant in a few cases that the shapes of the notched plates are extreme. However, we obtained estimation results accurate enough for practically except the cases above mentioned.
社団法人日本機械学会の論文
1997-01-25