The 0.06R (mm)-diameter bar is made of a brittle material with the ultimate strengths of 0.15R MPa in tension and 0.25R MPa in compression. The bar carries a bending moment and a torque, both of magnitude M. (a) Use the maximum normal stress theory to find the largest value of M that does not cause rupture. (b) Is the value of M found in Part (a) safe according to Mohr’s theory of failure? Note R=993
The 0.06R (mm)-diameter bar is made of a brittle material with the ultimate strengths of 0.15R MPa in tension and 0.25R MPa in compression. The bar carries a bending moment and a torque, both of magnitude M. (a) Use the maximum normal stress theory to find the largest value of M that does not cause rupture. (b) Is the value of M found in Part (a) safe according to Mohr’s theory of failure? Note R=993
Mechanics of Materials (MindTap Course List)
9th Edition
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Barry J. Goodno, James M. Gere
Chapter3: Torsion
Section: Chapter Questions
Problem 3.5.1P: A circular copper bar with diameter d = 3 in. is subjected to torques T = 30 kip-in. at its ends....
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The 0.06R (mm)-diameter bar is made of a brittle material with the ultimate strengths of
0.15R MPa in tension and 0.25R MPa in compression. The bar carries a bending moment and a
torque, both of magnitude M. (a) Use the maximum normal stress theory to find the largest value
of M that does not cause rupture. (b) Is the value of M found in Part (a) safe according to Mohr’s
theory of failure?
Note R=993
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