v8.2.0

[8.2.0] - 2024-03-25

Added

• Add methods to evaluate different strain measures of a field container, i.e. FieldContainer.evaluate.strain(tensor=True, asvoigt=False, k=0), FieldContainer.evaluate.log_strain(tensor=True, asvoigt=False) or FieldContainer.evaluate.green_lagrange_strain(tensor=True, asvoigt=False). These methods refer to math.strain(k=0) which uses math.strain_stretch_1d(k=0) by default with the strain exponent k of the Seth-Hill strain formulation.

Changed

• Change the return type of math.eig() which returns a namedtuple with attributes eigenvalues and eigenvectors. Now consistent with NumPy. This also affects math.eigh().
• Change the shape of the array of eigenvectors returned by math.eig() from (a, i, ...) to (i, a, ...). Now consistent with NumPy. This also affects math.eigh().
• Switch from a hard-coded logarithmic strain evaluation to a more generalized Seth-Hill strain-stretch relation in math.strain(fun=math.strain_stretch_1d, k=0) with a default strain-exponent of k=0 which returns the logarithmic strain.

What's Changed

• Enhance plots of quadrature schemes by @adtzlr in #723
• Enhance the plots of GaussLegendreBoundary by @adtzlr in #724
• Add FieldContainer.evaluate.strain() by @adtzlr in #726

Full Changelog: v8.1.0...v8.2.0