? _ij , ? _KL

Kronecker delta

? _iK , ? _Ki

Shifter

? _ijk , ? _IJK

Permutation tensor

X _K

Reference position of a material point

y _i

Present position of a material point

u _K

Mechanical displacement vector

J

Jacobian

C _KL

Deformation tensor

S _KL

Finite strain tensor

S _kl

Linear strain tensor

v _i

Velocity vector

d _ij

Deformation rate tensor

? _ij

Spin tensor

D/Dt

Material time derivative

? ₀

Reference mass density (scalar)

?

Present mass density

? _e

Free charge density per unit present volume (scalar)

? _E

Free charge density per unit reference volume (scalar)

? _e

Surface free charge per unit present area (scalar)

? _E

Surface free charge per unit reference area (scalar)

Q _e

Free charge (scalar)

Q

Quality factor

I

Current

V

Voltage

Z

Impedance

? ₀

Permittivity of free space (scalar)

Electrostatic potential

E _i

Electric field

P _i

Electric polarization per unit present volume

? _i

Electric polarization per unit mass

D _i

Electric displacement vector

Reference electric field vector

Reference electric polarization vector

Reference electric displacement vector

f _j

Mechanical body force per unit mass

? _ij

Cauchy stress tensor

Electrostatic stress tensor

Symmetric stress tensor in spatial, two-point, and material form

Symmetric Maxwell stress...