Discussion :: Strength of Materials - Section 3 (Q.No.13)
|Bikash Kabiraj said: (May 18, 2017)|
|We know, that suddenly load is 2 times of gradually load.|
|Rushi said: (Feb 17, 2019)|
|Gradually applied load is given as σ = (F/A) where, F is the gradually applied load.
here, work done is given as (F δL)/2.
strain energy stored = (σ2 / 2E) AL.
Work done is equal to the strain energy stored.
(F δL) / 2 = (σ2 / 2E) AL
so, σ = (F/A) --> (1)
Suddenly applied load is given as σ = (2F/A), here work done = (F δL).
(F δL) = (σ2 / 2E) AL.
Therefore, σ = (2F/A) --> (2)
From (1) and (2), it can be concluded that;
Hence, suddenly applied load is twice the gradually applied load.
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