Electric displacement law

Understand the Electric displacement law relationship used by Piezoelectricity.

Where to find it

Piezoelectricity → equations

How to use it

Compare the terms, signs and units with your intended physical assumptions before choosing model inputs.

Result

Equation: \mathbf D=\mathsf e:\boldsymbol{\varepsilon}+\boldsymbol{\epsilon}^{S}\mathbf E,\qquad\mathbf E=-\nabla V.

Troubleshooting

The equation describes the model assumptions; it is not a separate editable boundary condition. Check the parent physics page for setup and limitations.