Lab Manual for Tomczyk/Silberstein/ Whitman/Johnson’s Refrigeration and Air Conditioning Technology, 8th
8th Edition
ISBN: 9781305578708
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 32, Problem 27RQ
Explain why it is important to keep the cad cell clean at all times.
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Students have asked these similar questions
ut
Ex. The cantilever beam shown is, made from steel with σ = 552 MPa
is subjected to fully reversed load. Neglect shear stress
q
:10 cycles
effect, estimate wheather the beam is safe or not safe at N= los
The beam is machined surface and the operating temp. is 100c.
D
764
L= 10cm
L
D= 1.3 Cm
d = 1 cm
b= 1 cm
momend
diagram
-FL
Ex. The cantilever beam shown us, made ofrem steel with = 552 MPa
is
,
ut
subjected to fully reversed load. Neglect shear stress
effect, estimate wheather the beam is safe or not safe at N= lo cycles
9
The beam is machined surface and the operating temp. is 100C.
A
F
200
a=0
N
-200
N
1
L= 10cm
D
time
764
Yze.25 Gm
L
D= 1.3 cm
d = 1 cm
b= 1 cm
-momend
diagram
AA
-FL
at the root of the cantilever, the bending moment is max.
factor
Ex. Repeat Ex. in page (24), with fluctuating load as shown
below. By = 46242,041 = 552 MPa. Find the safety
(NF) using Modified -Goodman, Gerber, and soderberg criterias
F(N).
....400
time
Example
The bar Shown Is.
subsected to combined loadings as
follows:
P = = 20.KN
F = 0 to 2 KN
T= 0-5 KN.m
The bar material has Se=400 mpa and out = 1379 MPa, Yiu= 1000 mpa
Find the factor of safety, neglect the transverse Shear-
Sol
I load analysis
ар
F
T
Par
= 20 KN
(axial load-
Pmim =
-20 KN
fully reversed
dynamic)
Emark 2km
=
Fmim
= 0
N
(bending loading -dynamic)
Repeated
D=20mm
d=15
mm
r=5mm
L=
=250mm
Chapter 32 Solutions
Lab Manual for Tomczyk/Silberstein/ Whitman/Johnson’s Refrigeration and Air Conditioning Technology, 8th
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