The composite bar consisting of Steel and Aluminium, shown in the figure is connected to two grips at a temperature of $60^oC$ - Take $E_s = 2 × 10^5 N/mm^2 , E_A = 0.70 × 10^5 N/mm^2$

$α_s = 1.17 × 10^{-5} per^oC , α_A = 2.34 × 10^{-5} per^oC $

Mumbai university > MECH > SEM 3 > Strength Of Materials

Marks: 10M

Year: Dec 2013

Draw the same diagram

When there is a drop in the temperature of the grips, steel and Aluminium, both try to contract, which cause a tensile stress in each of the bars.

Steel:

$E_s = 2 × 10^5 N/mm^2$

$α_s = 1.17 × 10^{-5}/^oC $

$A_s = 250mm^2$

$L_s = …