Daily Concept Booster Civil Engineering : Elongation of bar due to self weight

Elongation of bar (∆) due to self weight –

(A)

∆ =(YL^2)/2E)
⇒ Along length if cross section area is same either rectangular section or circular section the deflection due to self weight is ((YL^2)/2E)

(B) Conical bar –

∆ =1/3×deflection in rectangular bar
(∆ =(YL^2)/6E)

(C) Circular tapered bar.

(∆ =PL/(π/4 D1 D2 )E)

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