*Prob. 3.5-18. A rigid beam AD is supported by three ide cal vertical rods that are attached to the beam at point C, and D. When the rods are initially attached to the be and P = 0, the rods are stress-free. With Fig. P3.5-18 the data below, (a) solve for the axial forces F₁, F₁, an in the support rods. (Hint: Select F₂ as the redundant fo and take moments about A and D to relate F, and F₁ to redundant force F₂. Use the Basic Force Method to st for F.) (b) Determine the vertical displacements and as identified in Fig. P3.5-18. A = 1.0 in², L = 60 in.. E= 30 x 10³ ksi a = 20 in., b = 40 in., c = 60 in., P= 10 kips L (1) "Rigid"

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Please show intermediate steps including free diagrams, equations used, and problem setup, so that your approach can be followed
*Prob. 3.5-18. A rigid beam AD is supported by three identi-
cal vertical rods that are attached to the beam at points A.
C, and D. When the rods are initially attached to the beam
and P = 0, the rods are stress-free. With Fig. P3.5-18 and
the data below, (a) solve for the axial forces F₁, F₂, and F
in the support rods. (Hint: Select F₂ as the redundant force,
and take moments about A and D to relate F, and F₁ to the
redundant force F₁. Use the Basic Force Method to solve
for F₂.) (b) Determine the vertical displacements u, and up.
as identified in Fig. P3.5-18.
A = 1.0 in², L
60 in.. E= 30 x 10³ ksi
a 20 in., b = 40 in.. c = 60 in.. P = 10 kips
(1)
A B
"Rigid"
P3.5-18, P3.5-19, P3.8-16 and P3.9-7
[(y)
Transcribed Image Text:*Prob. 3.5-18. A rigid beam AD is supported by three identi- cal vertical rods that are attached to the beam at points A. C, and D. When the rods are initially attached to the beam and P = 0, the rods are stress-free. With Fig. P3.5-18 and the data below, (a) solve for the axial forces F₁, F₂, and F in the support rods. (Hint: Select F₂ as the redundant force, and take moments about A and D to relate F, and F₁ to the redundant force F₁. Use the Basic Force Method to solve for F₂.) (b) Determine the vertical displacements u, and up. as identified in Fig. P3.5-18. A = 1.0 in², L 60 in.. E= 30 x 10³ ksi a 20 in., b = 40 in.. c = 60 in.. P = 10 kips (1) A B "Rigid" P3.5-18, P3.5-19, P3.8-16 and P3.9-7 [(y)
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