The rigid horizontal slab is attached to two identical copper rods. There is a gap Δ = 6.18 mm between the middle bar, which is made of aluminum, and the slab. Neglecting the mass of the slab, calculate the stress in each rod when the temperature in the assembly is increased by 81°C. Use the following data:

Residential Construction Academy: House Wiring (MindTap Course List)
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Author:Gregory W Fletcher
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Chapter1: Residential Workplace Safety
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The rigid horizontal slab is attached to two identical copper rods. There is a gap Δ = 6.18 mm between the
middle bar, which is made of aluminum, and the slab. Neglecting the mass of the slab, calculate the stress in each rod when the temperature in the assembly is increased by 81°C. Use the following data:

 

Each copper rod
Aluminum rod
A (mm²)
504
406
a(/°C)
16.8 x 10-6
23.1 x 10-6
E (GPa)
120
70
Transcribed Image Text:Each copper rod Aluminum rod A (mm²) 504 406 a(/°C) 16.8 x 10-6 23.1 x 10-6 E (GPa) 120 70
Copper
Aluminum
Copper
750 mm
Transcribed Image Text:Copper Aluminum Copper 750 mm
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