A) \[50\,\text{N/m}{{\text{m}}^{\text{2}}}\]
B) \[57.7\,\text{N/m}{{\text{m}}^{\text{2}}}\]
C) \[86.6\,\text{N/m}{{\text{m}}^{\text{2}}}\]
D) \[100\,\text{N/m}{{\text{m}}^{\text{2}}}\]
Correct Answer: D
Solution :
\[{{\sigma }_{y}}=200\,\text{N/m}{{\text{m}}^{\text{2}}}\text{,}\] FOS = 2 Allowable stress, \[{{\sigma }_{y}}=\frac{{{\sigma }_{y}}}{FOS}=\frac{200}{2}=100\,\text{N/m}{{\text{m}}^{\text{2}}}\] According to maximum principal stress theory, \[{{\sigma }_{1}}={{\sigma }_{y}}\] Under torsion, maximum principal stress, \[{{\sigma }_{1}}=\tau \] Permissible stress \[=100\,\text{N/m}{{\text{m}}^{\text{2}}}\]You need to login to perform this action.
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