Engineering Your Future
9th Edition
ISBN: 9780190279264
Author: William C. Oakes, Les L. Leone
Publisher: Oxford University Press, USA
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Chapter 2, Problem 2.47EAA
To determine
One professional organization and find out how they handle new and emerging technologies within their society. Where do they put them and where can people work in emerging areas find colleagues?
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Homework: ANOVA Table for followed design
B
AB
Dr
-1
-1
1
(15.18,12)
1
-1
-1
(45.48.51)
-1
1
-1
(25,28,19)
1
1
(75.75,81)
20.
[Ans. 9; 71.8 mm]
A semi-elliptical laminated spring is made of 50 mm wide and 3 mm thick plates. The length between
the supports is 650 mm and the width of the band is 60 mm. The spring has two full length leaves and
five graduated leaves. If the spring carries a central load of 1600 N, find:
1. Maximum stress in full length and graduated leaves for an initial condition of no stress in the
leaves.
2. The maximum stress if the initial stress is provided to cause equal stress when loaded.
[Ans. 590 MPa ; 390 MPa ; 450 MPa ; 54 mm]
3. The deflection in parts (1) and (2).
Q6/ A helical square section spring is set inside another, the outer spring having a free
length of 35 mm greater than the inner spring. The dimensions of each spring are as
follows:
Mean diameter (mm)
Side of square section (mm)
Active turns
Outer
Inner
Spring
Spring
120
70
8
7
20
15
Determine the (1) Maximum deflection of the two springs and (2) Equivalent spring
rate of the two springs after sufficient load has been applied to deflect the outer
spring 60 mm. Use G = 83 GN/m².
Chapter 2 Solutions
Engineering Your Future
Ch. 2 - Prob. 2.1EAACh. 2 - Prob. 2.2EAACh. 2 - Prob. 2.3EAACh. 2 - Prob. 2.4EAACh. 2 - Prob. 2.5EAACh. 2 - Prob. 2.6EAACh. 2 - Prob. 2.7EAACh. 2 - Prob. 2.8EAACh. 2 - Prob. 2.9EAACh. 2 - Prob. 2.10EAA
Ch. 2 - Prob. 2.11EAACh. 2 - Prob. 2.12EAACh. 2 - Prob. 2.13EAACh. 2 - Prob. 2.14EAACh. 2 - Prob. 2.15EAACh. 2 - Prob. 2.16EAACh. 2 - Prob. 2.17EAACh. 2 - Prob. 2.18EAACh. 2 - Prob. 2.19EAACh. 2 - Prob. 2.20EAACh. 2 - Prob. 2.21EAACh. 2 - Prob. 2.22EAACh. 2 - Prob. 2.23EAACh. 2 - Prob. 2.24EAACh. 2 - Prob. 2.25EAACh. 2 - Prob. 2.26EAACh. 2 - Prob. 2.27EAACh. 2 - Prob. 2.28EAACh. 2 - Prob. 2.29EAACh. 2 - Prob. 2.30EAACh. 2 - Prob. 2.31EAACh. 2 - Prob. 2.32EAACh. 2 - Prob. 2.33EAACh. 2 - Prob. 2.34EAACh. 2 - Prob. 2.35EAACh. 2 - Prob. 2.36EAACh. 2 - Prob. 2.37EAACh. 2 - Prob. 2.38EAACh. 2 - Prob. 2.39EAACh. 2 - Prob. 2.40EAACh. 2 - Prob. 2.41EAACh. 2 - Prob. 2.42EAACh. 2 - Prob. 2.43EAACh. 2 - Prob. 2.44EAACh. 2 - Prob. 2.45EAACh. 2 - Prob. 2.46EAACh. 2 - Prob. 2.47EAACh. 2 - Prob. 2.48EAACh. 2 - Prob. 2.49EAACh. 2 - Prob. 2.50EAA
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