Use Virtual Work Method to answer the questions below considering the truss shown in the figure. Assume A = 1200 mm?, E = 200 GPa and a = 12 x 106 / °C a. Axial force on member ED from the real structure in kN. Put (-) negative sign if it's under compression. b. Axial force on member AE from the virtual structure for the vertical displacement at joint A. c. Vertical displacement of joint A in mm due to external force only. Put negative sign if its downward. d. Vertical displacement of joint A in mm due to -100 °C change in temperature in members AE and ED. Don't add deflection due to external loads or fabrication error. Put negative sign if its downward. D E 4.2 m A B 5 kN 6.4 kN 4.2 m 4.2 m

Structural Analysis
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Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Use Virtual Work Method to answer the questions below considering the truss shown in the figure.
Assume A = 1200 mm?, E = 200 GPa and a = 12 x 106 / °C
a. Axial force on member ED from the real structure in kN. Put (-) negative sign if it's under compression.
b. Axial force on member AE from the virtual structure for the vertical displacement at joint A.
c. Vertical displacement of joint A in mm due to external force only. Put negative sign if its downward.
d. Vertical displacement of joint A in mm due to -100 °C change in temperature in members AE and ED. Don't
add deflection due to external loads or fabrication error. Put negative sign if its downward.
E
4.2 m
A
B
5 kN
6.4 kN
to
4.2 m
4.2 m
Transcribed Image Text:Use Virtual Work Method to answer the questions below considering the truss shown in the figure. Assume A = 1200 mm?, E = 200 GPa and a = 12 x 106 / °C a. Axial force on member ED from the real structure in kN. Put (-) negative sign if it's under compression. b. Axial force on member AE from the virtual structure for the vertical displacement at joint A. c. Vertical displacement of joint A in mm due to external force only. Put negative sign if its downward. d. Vertical displacement of joint A in mm due to -100 °C change in temperature in members AE and ED. Don't add deflection due to external loads or fabrication error. Put negative sign if its downward. E 4.2 m A B 5 kN 6.4 kN to 4.2 m 4.2 m
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