pvtend.compute_strain_basis

pvtend.compute_strain_basis(pv_dx_dx: ndarray, pv_dy_dy: ndarray) → ndarray

Compute normal strain deformation basis: ∂²q/∂x² − ∂²q/∂y².

Parameters:

• pv_dx_dx – ∂²q/∂x² in SI units (PVU/m²).

• pv_dy_dy – ∂²q/∂y² in SI units (PVU/m²).

Returns:

Normal strain (PVU/m²).