On the Torsion of a Shaft Having Infinite Number of Circumferential Semicircular Grooves

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  • 無限個の円周方向半円切欠きを有する丸棒のねじり
  • ムゲンコ ノ エンシュウ ホウコウ ハンエン キリカキ オ ユウスル マルボウ ノ ネジリ

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Abstract

Starting from Michell's stress functions, the author calculated the stress concentration factors of a shaft having infinite number of circumferential semicircular grooves under torsion. The linear combination of periodic functions is used so as to make notch surface free from surface tractions. The results show that a) Neuber's formula concerning the effect of interference of notches gives too great values of the stress concentration factors and b) the interference effects of deep notches are small.

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