segments, as shown in Figure 3. The end segments have cross-sectional area A1 = 840 mm2 and length L1 = 200 mm. The segment BC has a cross-sectional area A2 = 1260 mm2 and length L2 = 250 mm. The loads PB and PC are equal to 25.5 and 17.0 kN, respectively. Assume

segments, as shown in Figure 3. The end segments have cross-sectional area A1 = 840 mm2 and length L1 = 200 mm. The segment BC has a cross-sectional area A2 = 1260 mm2 and length L2 = 250 mm. The loads PB and PC are equal to 25.5 and 17.0 kN, respectively. Assume

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Pressure and Stress

Question

Bar ABCD consists of 3 prismatic segments, as shown in Figure 3. The end segments have cross-sectional area A1 = 840 mm2 and length L1 = 200 mm. The segment BC has a cross-sectional area A2 = 1260 mm2 and length L2 = 250 mm. The loads PB and PC are equal to 25.5 and 17.0 kN, respectively. Assume that Young's modulus is equal to E for the three lengths of the bar.
(a) Determine the reactions HA and HD at the labeled supports.
(b) Determine the axial compressive force FBC in the middle segment of the bar.

Ar-
A2
Pc
PB
DA
C
B
L
Figura 3: Problema 3

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