The stepped bar shown in the figure is subjected to a force at the center. Use the finite element method to determine the displacement at the center and reactions \(R_{\mathrm{L}}\) and \(R_{\mathrm{R}}\).

Assume: \(E=100 \mathrm{GPa}\), the area of cross sections of the three portions shown are, respectively, \(10^{-4} \mathrm{~m}^{2}, 2 \times 10^{-4} \mathrm{~m}^{2}\), and \(10^{-4} \mathrm{~m}^{2}\), and \(F=10,000 \mathrm{~N}\).

Transcribed Image Text:

RL 0.3 m 0.4 m 0.3 m RR