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The fixed-end bar ABCD has modulus of elasticity (E), consists of three prismatic segments, as shown in the figure. The end segments have cross-sectional area

  • The fixed-end bar ABCD has modulus of elasticity (E), consists of three prismatic segments, as shown in the figure. The end segments have cross-sectional area A1 = 840 mm2 and the middle segment has cross-sectional area A2 = 1260 mm2. It loaded by 25.5 kN and 17.0 kN as in the figure. (a) Determine the reactions RA and RD at the fixed supports. (b) Determine the compressive axial force FBC in the middle segment of the bar.

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