Rigid bar ABCD is loaded and supported as shown. Steel [E = 27800 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar (1) has a cross-sectional area of 0.63 in.2 and bar (2) has a cross-sectional area of 0.39 in.2. After load P is applied, the strain in bar (1) is found to be 720 με. Assume L1=56 in., L2=89 in., a=30 in., b=37 in., and c=33 in. Determine: (a) the stresses in bars (1) and (2). (b) the vertical deflection vD of point D on the rigid bar. (c) the load P.
Rigid bar ABCD is loaded and supported as shown. Steel [E = 27800 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar (1) has a cross-sectional area of 0.63 in.2 and bar (2) has a cross-sectional area of 0.39 in.2. After load P is applied, the strain in bar (1) is found to be 720 με. Assume L1=56 in., L2=89 in., a=30 in., b=37 in., and c=33 in. Determine: (a) the stresses in bars (1) and (2). (b) the vertical deflection vD of point D on the rigid bar. (c) the load P.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Rigid bar ABCD is loaded and supported as shown. Steel [E = 27800 ksi] bars (1) and (2) are unstressed before the load P is applied. Bar (1) has a cross-sectional area of 0.63 in.2 and bar (2) has a cross-sectional area of 0.39 in.2. After load P is applied, the strain in bar (1) is found to be 720 με. Assume L1=56 in., L2=89 in., a=30 in., b=37 in., and c=33 in. Determine:
(a) the stresses in bars (1) and (2).
(b) the vertical deflection vD of point D on the rigid bar.
(c) the load P.
Transcribed Image Text:L₁
a
(1)
B
L2
b
~
C
D
P
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