The rigid bar shown in the figure is fixed to the top of the three posts made of steel and aluminum. The posts each have a length of 250mm when no load is applied to the bar and the temperature is T1=200C. Determine the force supported by each post if the bar is subjected to a uniformly distributed load of 120kN/m and the temperature is raised to 70°C. The diameter of each post and its material properties are listed in the figure.
The rigid bar shown in the figure is fixed to the top of the three posts made of steel and aluminum. The posts each have a length of 250mm when no load is applied to the bar and the temperature is T1=200C. Determine the force supported by each post if the bar is subjected to a uniformly distributed load of 120kN/m and the temperature is raised to 70°C. The diameter of each post and its material properties are listed in the figure.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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The rigid bar shown in the figure is fixed to the top of the three posts made of steel and aluminum. The posts each have a length of 250mm when no load is applied to the bar and the temperature is T1=200C. Determine the force supported by each post if the bar is subjected to a uniformly distributed load of 120kN/m and the temperature is raised to 70°C. The diameter of each post and its material properties are listed in the figure.
Transcribed Image Text:listed in the figure.
E = 70GPa
ad=23x10-6
E = 200GPa
a =12x10-6.
m
°C
m-
m
m-°C
-300 mm 300 mm-120 KN/m
60 mm-
250mm
40 mm
40 mm-
Steel Aluminum Steel
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