review papers on stress singularity identification and characterization, GB Sinclair et al.:

• sinclair_i.pdf
• sinclair_ii.pdf
• sinclair_et_al_practical_convergence_divergenze_checks_for_stresses_from_fea.pdf

slight perturbations of the theoretical clamped/free limit angle test_singolarita_clamped-free_v2005r3.mud

Figure 2d, p.6 sinclair_ii pdf, κ=2; actually plane strain, $\nu=0.3$, critical angle from eq. (2.19).

modello marc/mentat

steel, 80x80mm square section, 2.5 mm thickness. modeled portion: 40mm in the axial direction, with 1 spot weld whose nominal diameter is 4mm.

file:

• profilo_torsione_saldatura_punti_solomesh_v2012.mfd
• profilo_torsione_saldatura_punti_completo_singolarita_v2012.mud
• profilo_torsione_saldatura_punti_completo_rbe2_v2012.mud

where (sorry):

• “graffa” = flap
• “lamiera” = metal sheet
• “punto” = spot [weld]
• “superiore” = upper
• “inferiore” = lower
• …