고체역학 (Beer) · Introduction—Concept of Stress · Problem 1.1
고체역학 (Beer) — Introduction—Concept of Stress: Problem 1.1
1.1 Two solid cylindrical rods AB and BC are welded together at B and loaded as shown. Knowing that $d_1 = 30 \text{ mm}$ and $d_2 = 50 \text{ mm}$, find the average normal stress at the midsection of (a) rod AB, (b) rod BC.
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