29. Calculate the compressive stress in the steel core in MPa due to the force P. A. 25.1 B. 28.3 C. 22.4 D. 21.8

Structural Analysis
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Chapter2: Loads On Structures
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29. Calculate the compressive stress in the steel core in MPa due to the force P.

A. 25.1
B. 28.3
C. 22.4
D. 21.8

 

 

A tri-metallic bar is uniformly compressed by an axial force P = 40 kN applied through a
rigid end plate (see figure). The bar consists of a circular steel core surrounded by a
brass and copper tubes. The steel core has a diameter of 30 mm, the brass tube has outer
diameter of 45 mm, and the copper tube has outer diameter of 60 mm. the corresponding
moduli of elasticity are E, = 210 GPa, E, = 100 GPa, and E= 120 GPa.
Copper tube
Brass tube
P= 40 kN
Steel core
30
mm
45
mm
60
mm
Transcribed Image Text:A tri-metallic bar is uniformly compressed by an axial force P = 40 kN applied through a rigid end plate (see figure). The bar consists of a circular steel core surrounded by a brass and copper tubes. The steel core has a diameter of 30 mm, the brass tube has outer diameter of 45 mm, and the copper tube has outer diameter of 60 mm. the corresponding moduli of elasticity are E, = 210 GPa, E, = 100 GPa, and E= 120 GPa. Copper tube Brass tube P= 40 kN Steel core 30 mm 45 mm 60 mm
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