MindTap Engineering for Dunlap's Sustainable Energy, SI Edition, 2nd Edition [Instant Access], 1 term (6 months)
2nd Edition
ISBN: 9781337551755
Author: DUNLAP
Publisher: Cengage Learning US
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3. A steel bolt through a 31-in long aluminum tube has the nut turned on until it just touches the end of the tube. No stress is introduced on the bolt or the tube. The temperature of the assembly is raised from 70 to 81 degrees Fahrenheit. The cross-sectional area of the bolt is 0.09 sq. inch and the cross-sectional area of the tube of 0.30 sq. inch.
a. Find the thermal deformation (in inches) of the steel bolt. (Write your answer to 6-decimal places.)
b. Find the thermal deformation (in inches) of the aluminum tube. (Write your answer to 6-decimal places.)
c. Find the stress (in psi) induced in the steel bolt by the temperature change.
d. Find the stress (in psi) induced in the aluminum tube by the temperature change.
The block shown is made of a magnesium alloy for which E = 45 GPa and ν = 0.35. Knowing that σx = -180 MPa, determine (a) the magnitude of σy for which the change in the height of the block will be zero, (b) the corresponding change in the area of the face ABCD, (c) the corresponding change in the volume of the block.
Determine the thermal resistance R′ and the R-value for the glass window ofThe thermal resistance R′ and the R-value of the window can be determined from as shown , respectively.
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MindTap Engineering for Dunlap's Sustainable Energy, SI Edition, 2nd Edition [Instant Access], 1 term (6 months)
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- A 13 in length of aluminum tubing (with E = 11.4 x 106 psi and = 12 x 10-6 /deg F) having a cross-sectional area of 1.6 in2 is installed with “fixed” ends so that it is stress-free at 70 deg F. In operation, the tube is heated throughout to a uniform 500 deg F. Careful measurement at the higher temperature indicates that the fixed ends separate to 13.008 in. What loads are exerted on the ends of the tube, and what are the resultant stresses?arrow_forwardThe block shown is made of a magnesium alloy for which E=X2GPaand ϑ=0.35. Knowing that σx= X1 MPa, determine (a) the magnitude of σyfor which the change in the height of the block will be zero, (b) the corresponding change in the area of the face ABCD, (c) the corresponding change in the volume of the block.arrow_forwardAn aluminum pipe has a length of 53 m at a temperature of 7°C. An adjacent steel pipe at the same temperature is 7 mm longer. At what temperature will the aluminum pipe be 21 mm longer than the steel pipe? Assume that the coefficient of thermal expansion for the aluminum is 22.5x10-6/°C and that the coefficient of thermal expansion for the steel is 12.5×106/°C. Answer: Tf = i °Carrow_forward
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