Question

[e]. Consider 2 metallic strips A (top) and B (bottom) of identical length (D, width (w) and thickness (see the sketch below). Strip A has a higher coefficient of thermal expansion compared to strip B. The strips are bonded together and the temperature is raised by AT>0. What shape will the two strips take? Show it with a sketch. Also, will they have thermal stresses? If so, specify the stress state in each strip. When attempting this problem, assume that dimensions w and t are much smaller compared to I [f]. Following stress distribution results from Hertz theory for two cylinders in contact and subjected to loading perpendicular to the contact surface. 02 Show a 3D stress element and corresponding Mohr's circle for the stre ss components corresponding to (i) z/b < 0.436 and (ii) z/b> 0.436 where z/b value of 0.436 corresponds to the intersection of ơr and o", curves.

Answer 1

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