A beam is made from two cylinders, where the inner cylinder is steel and the outer cylinder is aluminum. Which cylinder will yield first if beam is a simply supported cantilever beam?

Situation: We have a beam made up from two cylinder. Inner cylinder is Steel and outer cylinder is Aluminum. This beam is fixed on a wall on one end, and point load at the other end.

How do we figure out which cylinder (inner or outer) will experience yield stress first? How do we go on figuring out force distribution?

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