고체역학 (Beer) — Stress and Strain—Axial Loading: Problem 2.114

2.114 Solve Prob. 2.113, knowing that \( a = 1.76\text{ m} \) and that the magnitude of the force \( Q \) applied at \( B \) is gradually increased from zero to \( 135\text{ kN} \). (Reference from Prob. 2.113: The rigid bar \( ABC \) is supported by two links, \( AD \) and \( BE \), of uniform \( 37.5 \times 6\text{-mm} \) rectangular cross section and made of a mild steel that is assumed to be elastoplastic with \( E = 200\text{ GPa} \) and \( \sigma_Y = 250\text{ MPa} \). Link \( AD \) has a length of \( 1.7\text{ m} \) and link \( BE \) has a length of \( 1.0\text{ m} \). The total length of the bar \( AC \) is \( 2.64\text{ m} \), with \( C \) being a pin support and the distance from \( C \) to \( B \) denoted as \( a \).)