Question

1- Indeterminate & Thermal Effect The rigid bar shown below is fixed to the top of the three posts made of A-36 steel and 2014-T6 aluminum. The posts each have a length of 250mm when no load is applied to the bar, and the temperature is T1 = 20°C. Determine the force supported by each post if the bar is subjected to a uniform distributed load of 150 kN/m and the temperature is raised to T2 = 80°C. 300 mm 300 mm 150 kN/m 60 mm 250 mm 40 mm 40 mm Steel Aluminum Steel Materials Poisson's Ratio v Coef. of Therm. Expansion a (10^-6)/°C Metallic Aluminum 2014-T6 0.35 23 Wrought Alloys 6061-T6 0.35 24 Cast Iron Alloys Gray ASTM 20 0.28 12 Malleable ASTM A-197 0.28 12 Copper Alloys Red Brass C83400 0.35 18 Bronze C86100 0.34 17 Magnesium Alloy [Am 1004-T61] 0.30 26 Structural A-36 0.32 12 Steel Structural A992 0.32 12

          1- Indeterminate & Thermal Effect
The rigid bar shown below is fixed to the top of the three
posts made of A-36 steel and 2014-T6 aluminum. The posts
each have a length of 250mm when no load is applied to the
bar, and the temperature is T1 = 20°C. Determine the force
supported by each post if the bar is subjected to a uniform
distributed load of 150 kN/m and the temperature is raised to
T2 = 80°C.
300 mm 300 mm
150 kN/m
60 mm
250 mm
40 mm
40 mm
Steel Aluminum Steel
Materials
Poisson's Ratio v
Coef. of Therm. Expansion a (10^-6)/°C
Metallic
Aluminum 2014-T6 0.35 23
Wrought Alloys 6061-T6 0.35 24
Cast Iron Alloys Gray ASTM 20 0.28 12
Malleable ASTM A-197 0.28 12
Copper Alloys Red Brass C83400 0.35 18
Bronze C86100 0.34 17
Magnesium Alloy [Am 1004-T61] 0.30 26
Structural A-36 0.32 12
Steel Structural A992 0.32 12

1- Indeterminate Thermal Effect
The rigid bar shown below is fixed to the top of the three
posts made of A-36 steel and 2014-T6 aluminum. The posts
each have a length of 250mm when no load is applied to the
bar, and the temperature is T1 = 20°C. Determine the force
supported by each post if the bar is subjected to a uniform
distributed load of 150 kN/m and the temperature is raised to
T2 = 80°C.
300 mm 300 mm
150 kN/m
60 mm
250 mm
40 mm
40 mm
Steel Aluminum Steel
Materials
Poisson's Ratio v
Coef. of Therm. Expansion a (10^-6)/°C
Metallic
Aluminum 2014-T6 0.35 23
Wrought Alloys 6061-T6 0.35 24
Cast Iron Alloys Gray ASTM 20 0.28 12
Malleable ASTM A-197 0.28 12
Copper Alloys Red Brass C83400 0.35 18
Bronze C86100 0.34 17
Magnesium Alloy [Am 1004-T61] 0.30 26
Structural A-36 0.32 12
Steel Structural A992 0.32 12

Added by Sergio M.

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