Hi everyone I just wonder if there is any way to compute the 3D Hencky strain. I know if the left stretch tensor V is a diagonal tensor, then we can use E_h = diag(elem_op(ln,diag_vector(V))) But for the general case, we need to calculate the eigenvalues and eigenvectors of V, which is very dif…

Hencky(Logarithm) strain

bleyerj April 12, 2021, 1:03pm 2

Hi, no the eigenvalue decomposition for evaluating the Hencky strain is done within MFront. It cannot be easily done with UFL operators apart from implementing the complex expressions for 3D eigenvalues.

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Hencky(Logarithm) strain

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