General piezo symbols

Symbol

Description

    Unit       

Generel/

Noliac

A

Electrode surface area

  mm²

N

c

Stiffness coefficient

  N/m²

G

C

Capacitance

 F

G

d

Piezoelectric charge coefficient

C/N

G

f

Frequency

Hz

G

Hz

N

f_a

Anti resonance frequency

Hz

G

f_r

Resonance frequency

Hz

G

F_b

Blocking force

N

N

N

g

gravitational constant

kg m / s²

G

g_ij

Piezoelectric voltage coefficienct

V•m/N

G

H

Height

mm

N

I

Current

A

G

N

N

N

ID

Inner diameter

mm

N

k

Coupling factor

G

N

K₀

Spring constant

mm/N

N

K

Relative dielectric constant

 -

G

N

L

Length

mm

N

L_c

Clamping length (on plate benders)

mm

N

∆L

Maximum free displacement

µm

N

m

Mass

kg

N

N

n

Number

-

N

N

Frequency constant

Hz•m

N

OD

Outer diameter

mm

N

OD_m

Maximum outer diameter

mm

N

P

Power

W

G

Q

Charge

C

G

Q_m

Mechanical factor

 -

G

s

Elastic compliance

M²/N

G

s

Stroke

µm

N

t

Time

s

G

t_p

s

t_r

Period time of actuator's resonance

s

N

t₀

Arbitrary time when measurement started

s

N

tan δ

Dissipation factor

 -

G

T

Thickness/ height of internal ceramic layers

µm

N

T_c

Curie temperature

°C

G

Y

Youngs modulus

N/m²

G

U

Voltage

V

N

U_pp

Voltage peak to peak

V

N

U^D

Voltage Open Circuit

V

N

W

Width

mm

N

W_m

Maximum Width (including external electrodes)

mm

N

ε₀

Permittivity of free space

8,854 • 10^-12 F/m

G

ε^T

Permittivity

F/m

G

Density

g/mm³

G