Mechanical Engineering - Machine Design - Discussion

Discussion Forum : Machine Design - Section 4 (Q.No. 29)
29.
The resilience of a bolt may be increased by
increasing its shank diameter
increasing its length
decreasing its shank diameter
decreasing its length
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

Ram Sevak Kushwaha said:   4 years ago
If you increase the diameter of the shank, it will also increase stress concentration. So, the only length will be increased.

Haftu wedajo said:   6 years ago
What about the diameter. Which is related to the area?

Lalobhai said:   7 years ago
Because due to uniform strength of bolt theory, we can't change shank dia. But from formula resilience means stored energy due to load U = 0.5 * σ^2 * volume/2 * E
Volume = Area * length.

So, the only length can be changed to increase resilience.

Harikrishnan said:   8 years ago
Can anyone prove this by formula or by any theory?

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