- #1

gunta

- 4

- 1

1.The center rod CD of the assembly shown in the figure is heated from T1 = 30oC to T2 = 180oC using electrical resistance heating. The two end rods AB and EF are heated from T1 = 30oC to T2 = 50oC. At the lower temperature T1, the gap between C and the rigid bar is 0.7 mm. Rods AB and EF are made of steel and each has a cross-sectional area of 125 mm2. CD is made of aluminum and has a cross-sectional area of 375 mm2. ESteel = 200 GPa, EAluminum = 70 GPa, alpha of steel = 12x10-6/oC, alpha of Aluminum = 23 x10-6 /oC.

a. Calculate the force in rods AB, EF and CD caused by the increase in temperature.

b. Calculate the stress in rods AB, EF and CD caused by the increase in temperature2. i tried using the equations for thermal stress i.e. stress = E x alpha x change in temp this is a copy of the question's diagram in case the attachment doesn't open

http://www.chegg.com/homework-help/questions-and-answers/1-center-rod-cd-assembly-shown-figure-heated-t1-30oc-t2-180oc-using-electrical-resistance--q2928326

a. Calculate the force in rods AB, EF and CD caused by the increase in temperature.

b. Calculate the stress in rods AB, EF and CD caused by the increase in temperature2. i tried using the equations for thermal stress i.e. stress = E x alpha x change in temp this is a copy of the question's diagram in case the attachment doesn't open

http://www.chegg.com/homework-help/questions-and-answers/1-center-rod-cd-assembly-shown-figure-heated-t1-30oc-t2-180oc-using-electrical-resistance--q2928326

#### Attachments

Last edited: