【Daily Question】Theoretical Foundation 2020.03.29

2020-03-29 View Original

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Multiple-choice question: A solid circular shaft with a diameter of d is subjected to torsion. To reduce the maximum torsional shear stress by half while keeping the torque constant, the diameter of the shaft should be changed to ( ). A.2d B.0.5d C.√2d D.3√2d Answer: D Hint: Extra rewards will be given to those who can explain the solution process; the answer can be seen in the response!

Reply #2 2020-03-29

This post was last edited by Zhongyuanren on 2020-3-29 at 18:08. Analysis of D.3√2d: Torsional section modulus. [Solution] Let the diameter of the modified circular shaft be ; then, it can be determined that:

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【Daily Question】Theoretical Foundation 2020.03.29

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