Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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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.
A rectangular nylon [E = 8 GPa; ?= 0.35; ? = 24 ×10
6/°C] plate has a circular hole in its center. At an initial
temperature of T¡ = 15°C, the plate width is b = 260
mm, the plate height is h = 160 mm, the diameter of
the central hole is d = 45 mm, and the thickness of
the plate is t = 17 mm. At a final temperature of Tf=
52°C, determine
(a) the diameter d of the central hole.
(b) the thickness t of the plate.
b
h
Subject: strength of materials 1
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