Page 26 - Singiresu S. Rao-Mechanical Vibrations in SI Units, Global Edition-Pearson (2017)

List of Symbols

Symbol Meaning SI Units

a, a 0 , a 1 , a 2 ,… constants, lengths
a ij flexibility coefficient m/N
[a] flexibility matrix m/N
A area m 2
A, A 0 , A 1 ,… constants
b, b 1 , b 2 ,… constants, lengths
B, B 1 , B 2 ,… constants
>
B balancing weight N
#
c,c viscous damping coefficient N s>m
∙
c, c 0 , c 1 , c 2 ,… constants
c wave velocity m/s
#
C c critical viscous damping constant N s>m
#
C i damping constant of i th damper N s>m
#
C ij damping coefficient N s>m
#
[c] damping matrix N s>m
′
′
C, C 1 , C 2 , C 1 , C 2 c constants
d diameter, dimension m
D diameter m
[D] dynamical matrix s 2
e base of natural logarithms
e > > eccentricity m
e x , e y unit vectors parallel to x and y directions
E Young’s modulus Pa
E[x] expected value of x
f linear frequency Hz
f force per unit length N/m
#
f , f unit impulse N s
∙
F, F d force N
F 0 amplitude of force F(t) N

23