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From the tests I made it seems that `eleResponse(<eleTag>, 'section', <sec_num>, 'force')` returns internal forces. I can't think of a model simpler than the one above; only one beam (0-->1) in the X axis direction (the diagonal rod 0-->2 is in the model only for plot clarity purpose), constrained a...

For test purpose I made a very simple 3D test model consisting in a cantilever beam going from constrained node 0 at (0,0,0) to free node 1 at(1000,1000,1000) and loaded in node 1 with (100, 1000, 2000, 0, 0, 0). Local coordinates of beam are coincident with global coordinates. The free node of cant...