고체역학 (Beer) — Analysis and Design of Beams for Bending: Problem 5.18

5.18 For the beam and loading shown, determine the maximum normal stress due to bending on section \(a-a\). Given data from Figure P5.18: Beam: Simply supported beam \(AB\) with a \(W310 \times 52\) cross-section. Span length: \(L = 5 \times 0.8\text{ m} = 4.0\text{ m}\). Loads: \(30\text{ kN}\) at \(0.8\text{ m}\) from \(A\). \(50\text{ kN}\) at \(1.6\text{ m}\) from \(A\). \(50\text{ kN}\) at \(2.4\text{ m}\) from \(A\). \(30\text{ kN}\) at \(3.2\text{ m}\) from \(A\). Section \(a-a\) is located at \(x = 2.0\text{ m}\) from support \(A\).