고체역학 (Gere) — Stresses in Beams (Advanced Topics): Problem 6.10-18

6.10-18 A singly symmetric beam with a T-section (see figure) has cross-sectional dimensions \(b = 140 \text{ mm}\), \(a = 190.8 \text{ mm}\), \(t_w = 6.99 \text{ mm}\), and \(t_f = 11.2 \text{ mm}\). Calculate the plastic modulus \(Z\) and the shape factor \(f\).