고체역학 (Gere) — Axially Loaded Members: Problem 2.2-18

2.2-18 The horizontal rigid beam ABCD is supported by vertical bars BE and CF and is loaded by vertical forces \(P_1 = 400 \text{ kN}\) and \(P_2 = 360 \text{ kN}\) acting at points A and D, respectively (see figure). Bars BE and CF are made of steel (\(E = 200 \text{ GPa}\)) and have cross-sectional areas \(A_{BE} = 11,100 \text{ mm}^2\) and \(A_{CF} = 9280 \text{ mm}^2\). The distances between various points on the bars are shown in the figure. Determine the vertical displacements \(\delta_A\) and \(\delta_D\) of points A and D, respectively.