At a temperature of 60°F, a 0.05-in. gap exists between the ends of the two bars shown. Bar (1) is an aluminum alloy [E = 10,000 ksi; v=0.32; a = 12.5 x 106/°F] bar with a width of 2.7 in. and a thickness of 0.65 in. Bar (2) is a stainless steel [E = 28,000 ksi; v = 0.12; a = 9.6 x 10-6/°F] bar with a width of 1.6 in. and a thickness of 0.65 in. The supports at A and Care rigid. Assume h₂=2.7 in., h₂=1.6 in., L₁=26 in., L₂=40 in., and A = 0.05 in. Determine (a) the lowest temperature at which the two bars contact each other. (b) the normal stress in the two bars at a temperature of 225°F. (c) the normal strain in the two bars at 225°F. (d) the change in width of the aluminum bar at a temperature of 225°F. L₁ h₂ BO Answer: Tcontact = h₂ Determine the lowest temperature, Tcontact at which the two bars contact each other. eTextbook and Media L₂ °F

At a temperature of 60°F, a 0.05-in. gap exists between the ends of the two bars shown. Bar (1) is an aluminum alloy [E = 10,000 ksi; v=0.32; a = 12.5 x 106/°F] bar with a width of 2.7 in. and a thickness of 0.65 in. Bar (2) is a stainless steel [E = 28,000 ksi; v = 0.12; a = 9.6 x 10-6/°F] bar with a width of 1.6 in. and a thickness of 0.65 in. The supports at A and Care rigid. Assume h₂=2.7 in., h₂=1.6 in., L₁=26 in., L₂=40 in., and A = 0.05 in. Determine (a) the lowest temperature at which the two bars contact each other. (b) the normal stress in the two bars at a temperature of 225°F. (c) the normal strain in the two bars at 225°F. (d) the change in width of the aluminum bar at a temperature of 225°F. L₁ h₂ BO Answer: Tcontact = h₂ Determine the lowest temperature, Tcontact at which the two bars contact each other. eTextbook and Media L₂ °F

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

Part 1
At a temperature of 60°F, a 0.05-in. gap exists between the ends of the two bars shown. Bar (1) is an aluminum alloy [E = 10,000
ksi; v = 0.32; a = 12.5 x 106/°F] bar with a width of 2.7 in. and a thickness of 0.65 in. Bar (2) is a stainless steel [E = 28,000 ksi; v =
0.12; a = 9.6 x 106/°F] bar with a width of 1.6 in. and a thickness of 0.65 in. The supports at A and C are rigid. Assume h₁=2.7 in.,
h₂=1.6 in., L₁=26 in., L2=40 in., and 4 = 0.05 in. Determine
(a) the lowest temperature at which the two bars contact each other.
(b) the normal stress in the two bars at a temperature of 225°F.
(c) the normal strain in the two bars at 225°F.
(d) the change in width of the aluminum bar at a temperature of 225°F.
(1)
L₁
h₁
Answer: Tcontact=
B
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A
eTextbook and Media
h₂
Determine the lowest temperature, Tcontact: at which the two bars contact each other.
(2)
L2
°F
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