## Sanjay Govindjee

Print publication date: 2012

Print ISBN-13: 9780199651641

Published to Oxford Scholarship Online: December 2013

DOI: 10.1093/acprof:oso/9780199651641.001.0001

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# (p.311) Appendix B Units, Constants, and Symbols

Source:
Engineering Mechanics of Deformable Solids
Publisher:
Oxford University Press

To convert between SI units and USCS units Table B.1 provides a set of helpful conversion relations. Tables B.1B.5 provide additional useful information. For additional information on units, see the National Institute of Standards Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, National Institute of Standards Handbook 44 – 2008 Edition. Of particular interest is Appendix C of this handbook, which lists many useful

To convert

To

Multiply by

Length

Inches (in)

Millimeters (mm)

25.400

Inches (in)

Meters (m)

0.025400

Feet (ft)

Meters (m)

0.304800

Angles

Degrees (deg)

π/180

Area

Square inches (in2)

Square meters (m2)

0.000645

Force

Pounds Force (lbf)

Newtons (N)

4.448222

Pressure

Pounds per sq. inch (psi)

Pascal (Pa = N/m2)

6894.757

Thousand pounds per sq inch (ksi)

Mega-Pascal (MPa = N/mm2)

6.894757

Million pounds per sq. inch (msi)

Giga-Pascal (GPa = kN/m2)

6.894757

Mass

Pound Mass (lbm)

Kilogram (kg)

0.45359237

Torque

Inch pound force (lbf-in)

Newton-meter (N-m)

0.112985

Foot pound force (lbf-ft)

Newton-meter (N-m)

1.355818

Power

Horsepower (hp = 550 lbf-ft/s)

Watt (W = N-m/s)

745.700

(p.312) conversion factors between different systems of units. A brief historical discussion of units can be found in Appendix B of this handbook, which is available online at http://ts.nist.gov/WeightsAndMeasures/Publications/H44-08.cfm

Prefix

Symbol

Multiplying factor

Yotta

Y

1024

Zetta

Z

1021

Exa

E

1018

Peta

P

1015

Tera

T

1012

Giga

G

109

Mega

M

106

Kilo

k

103

Milli

m

10−3

Micro

μ

10−6

Nano

n

10−9

Pico

p

10−12

Femto

f

10−15

Atto

a

10−18

Zepto

z

10−21

Yocto

y

10−24

(p.313)
 Gravitational constant (g) 9.80665 (m/s2) Gravitational constant (g) 32.1740 (ft/s2) Natural Logarithm Base (e) 2.718281828 Pi (π) 3.14159265 (rad) Speed of light (c) 299792458 (m/s) Standard atmosphere 101325 (Pa)

Symbol

Name

Upper case

Lower case

A

α

alpha

B

β

beta

Γ

γ

gamma

Δ

δ

delta

E

∊, ε

epsilon

Z

ζ

zeta

H

η

eta

Θ

θ, ϑ

theta

I

ι

iota

K

κ

kappa

Λ

λ

lambda

M

μ

mu

N

ν

nu

Ξ

ξ

xi

O

o

omicron

Π

π, ϖ

pi

P

ρ, ϱ

rho

Σ

σ, ς

sigma

T

τ

tau

ϒ

υ

upsilon

Φ

ϕ, ϕ

phi

X

χ

chi

Ψ

ψ

psi

Ω

ω

omega

(p.314)

Abbreviation

Latin

English

e.g.

exempli gratia

for example

et al.

et alii

and others

etc.

et cetera

and so on

ibid.

ibidem

in the same place

i.e.

id est

that is

q.e.d.

quod erat demonstrandum

which was to be demonstrated

viz.

videlicet

namely