Dear community/developers, I am using FEniCSx 0.9 with Docker on Microsoft Windows. In the MWE posted below, I perform a 2-D displacement-controlled FEA and compute the displacement U_disp_ctrl and stress sigma_disp_ctrl. What I am interested in is: imposing tractions obtained by t_N = ufl.dot(sig…

Ah, if I understand your question well, then you’ve run into one of the more elegant but challenging bits of math in finite element analysis: flux extraction. Essentially, one should not evaluate the fluxes (i.e., traction in the case of elasticity/linear momentum equations) as simply the stress op…

Consistency between displacement-controlled and load-controlled FEAs

dolfinx

dokken November 26, 2025, 10:33am 4

Have you considered: Modify matrix diagonal -- dolfinx version for A.ident_zeros() - #3 by dokken

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Consistency between displacement-controlled and load-controlled FEAs

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