AUTOMOTIVE TECHNOLOGY -W/MINDTAP ACCESS
7th Edition
ISBN: 9780357096789
Author: ERJAVEC
Publisher: CENGAGE L
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Textbook Question
Chapter 4, Problem 18MC
The boiling point of the coolant in an engines cooling system is raised by the
- thermostat
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12.
Figure Q12 shows a prospective design for a conveyor roller system, for transferring
crates, one at a time. The system is made up of two parallel rectangular steel
beams, built-in at one end and simply supported at the other, with closely spaced
rollers mounted in-between, for the crate to pass over.
a) Using Macaulay notation, carry out an analysis of the problem and calculate
the deflection of the mid-length point of the beams when the crate is
centrally located, midway between A and B. State any important
assumptions used in your analysis.
[20 marks]
b) Comment briefly whether this would be the maximum deflection of the beams
when the crate is centrally located.
2 m
8 m
A
Direction of travel
Figure Q12 (side view, only one beam visible)
Useful information
I for each separate beam = 12 ×10 m²
E for both beams = 210 GPa
Weight of one crate = 800 N
[5 marks]
B
11.
A ring (side view shown in Figure Q11) has a circular solid cross-section of 5 mm
diameter. The ring itself has a radius of R = 100 mm and a very narrow gap at point
A, that allows the two free ends to be pulled apart by forces P, increasing the size of
the gap.
○
P
A
Figure Q11
P
a) Show that the total strain energy of the ring due to the applied forces is:
U =
3πP²R³
2EI
[12 marks]
b) Find the maximum bending stress produced if forces of P = 8 N are applied.
[6 marks]
c) What minimum force P would cause the material in the ring to yield and at
which locations could this yielding begin to occur?
Useful information
E for the ring material = 75 GPa
Oyield for the ring material = 190 MPa
[7 marks]
Q2(15 Marks): From Fig. 2, Determine
(a) mass equivalent in term x2, (b)
stiffness equivalent in term x2, and (c) the
natural frequency for the system in term
x2. Note: (1) J Cylinder =
mcr?
J link
(2)
2
3
Pulley, mass moment of
inertia J
Rigid link 1 (mass m₁),
rotates with pulley.
about O
Cylinder, mass m
Adherence to the symbols as in the question
152 153
xx(1)
Fig. (2)
m
k₁
nimmunizmu
Rigid link 2 (mass m₂)
Chapter 4 Solutions
AUTOMOTIVE TECHNOLOGY -W/MINDTAP ACCESS
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Ch. 4 - Technician A says that liquid cooling an engine...Ch. 4 - Prob. 8MCCh. 4 - Which emission control system introduces exhaust...Ch. 4 - Prob. 10MCCh. 4 - Technician A says that a transaxle delivers torque...Ch. 4 - Which of the following is not part of the running...Ch. 4 - Which of the following statements about unibody...Ch. 4 - Which type of transmission uses pulleys to change...Ch. 4 - Prob. 15MCCh. 4 - What two major engine components work together to...Ch. 4 - Technician A says that an air-conditioning system...Ch. 4 - The boiling point of the coolant in an engines...Ch. 4 - While discussing the operation of air-conditioning...Ch. 4 - Prob. 20MCCh. 4 - Which of the following is not accomplished by the...
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