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Analysis and Design of Machine Elements
book

Analysis and Design of Machine Elements

by Wei Jiang
April 2019
Intermediate to advanced content levelIntermediate to advanced
528 pages
14h 4m
English
Wiley
Content preview from Analysis and Design of Machine Elements

14 Springs

3D illustrations of various types of helical springs, Belleville springs, spiral springs, leaf springs and ring springs.

Nomenclature

b
slenderness ratio
C
spring index
D
mean diameter, mm
D i
inside diameter, mm
D o
outside diameter, mm
d
spring wire diameter, mm
E
modulus of elasticity, MPa
F
external axial force, N
f n
fundamental natural frequency, Hz
G
shear modulus, MPa
g
gravity acceleration, m s−2
H f
free height/length of spring, mm
H h
length of hook, mm
H i
installed height/length, mm
H o
operating height/length, mm
H s
solid height/length, mm
h
working distance of a spring, mm
I
moment of inertia of spring wire, mm4
J
polar moment of inertia, mm4
K w
Wahl factor
K wT
Wahl factor for torsion spring
k
spring rate, N mm−1, N m−1
k ϕ
spring rate of torsion spring, N mm/(°)
L
length of wire, mm
M
bending moment, N mm
m
mass of spring, kg
n
number of active coils
n total
total number of coils
p
spring pitch, mm
S
shear force, N
S ca
fatigue strength safety factor
T
torsional moment, N mm
U
strain energy, J
U 0
energy loss due to friction, J
W
section modulus, mm3
w
work for a deflection under a load, J
α
pitch angle, °
δ
coil clearance, mm
δ 1
coil clearance at the maximum load, mm
λ
deflection, mm
ρ
density, kg m−3
σ
bending stress, MPa
σ b
ultimate tensile ...
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Publisher Resources

ISBN: 9781119276074Purchase book