고체역학 (Gere) — Applications of Plane Stress: Problem 8.4-15

8.4-15 A beam with a wide-flange cross section (see figure) has the following dimensions: \(b = 120 \text{ mm}\), \(t = 10 \text{ mm}\), \(h = 300 \text{ mm}\), and \(h_1 = 260 \text{ mm}\). The beam is simply supported with span length \(L = 3 \text{ m}\) and supports a uniform load \(q = 80 \text{ kN/m}\). Calculate the principal stresses \(\sigma_1\) and \(\sigma_2\) and the maximum shear stress \(\tau_{\text{max}}\) at a cross section located \(0.6 \text{ m}\) from the left-hand support at each of the following locations: (a) the bottom of the beam, (b) the bottom of the web, and (c) the neutral axis.