Page 22 - Shigley's Mechanical Engineering Design

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List of Symbols

This is a list of common symbols used in machine design and in this book. Specialized
use in a subject-matter area often attracts fore and post subscripts and superscripts.
To make the table brief enough to be useful, the symbol kernels are listed. See
Table 14–1, pp. 735–736 for spur and helical gearing symbols, and Table 15–1,
pp. 789–790 for bevel-gear symbols.

A Area, coefficient
A Area variate
a Distance, regression constant
ˆ a Regression constant estimate
a Distance variate
B Coefficient
Bhn Brinell hardness
B Variate
b Distance, Weibull shape parameter, range number, regression constant,
width
b ˆ Regression constant estimate
b Distance variate
C Basic load rating, bolted-joint constant, center distance, coefficient of
variation, column end condition, correction factor, specific heat capacity,
spring index
c Distance, viscous damping, velocity coefficient
CDF Cumulative distribution function
COV Coefficient of variation
c Distance variate
D Helix diameter
d Diameter, distance
E Modulus of elasticity, energy, error
e Distance, eccentricity, efficiency, Naperian logarithmic base
F Force, fundamental dimension force
f Coefficient of friction, frequency, function
fom Figure of merit
G Torsional modulus of elasticity
g Acceleration due to gravity, function
H Heat, power
H B Brinell hardness
HRC Rockwell C-scale hardness
h Distance, film thickness
¯ h CR Combined overall coefficient of convection and radiation heat transfer
I Integral, linear impulse, mass moment of inertia, second moment of area
i Index
i Unit vector in x-direction
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