Civil Engineering - Strength of Materials - Discussion

Discussion Forum : Strength of Materials - Section 1 (Q.No. 3)
3.
The ratio of strengths of solid to hollow shafts, both having outside diameter D and hollow having inside diameter D/2, in torsion, is
1/4
1/2
1/16
15/16
3/8
Answer: Option
Explanation:
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Discussion:
42 comments Page 5 of 5.

MAHARAJ said:   8 years ago
@Bhagchand.

Yes, you are right.

The answer is 16/15.

Ravikumar said:   8 years ago
The solid section max shear stress is 16T/pi D3.
Hollow section is 16T/piD^3*[1-[D^4/d^4]].
The ratio of these to is 15/16 once remembering d=D/2.


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