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
f max	Maximum frequency	Hz	N
fa	Anti resonance frequency	Hz	G
fr	Resonance frequency	Hz	G
Fb	Blocking force	N	N
F dyn	Dynamic Force	N	N
g	gravitational constant	kg m / s2	G
gij	Piezoelectric voltage coefficienct	V•m/N	G
H	Height	mm	N
I	Current	A	G
Iavg	Average Current	A	N
Imax	Maximum Current	A	N
IE	Current Closed Circuit	V	N
ID	Inner diameter	mm	N
k	Coupling factor		G
k	Stiffness of actuator	mm/N	N
K0	Spring constant	mm/N	N
K	Relative dielectric constant	-	G
l0	Nominal Displacement	m	N
L	Length	mm	N
Lc	Clamping length (on plate benders)	mm	N
∆L	Maximum free displacement