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N — Axial force
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T1 — Shear force along first local axis
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T2 — Shear force along second local axis
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Mt — Twisting moment
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M1 — Bending moment around first local axis
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M2 — Bending moment around second local axis
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The axial force and twisting moment are positive in the direction of the boundary system normal. For an external boundary, this is by default the outward normal. For an internal boundary, you can use the Reverse Normal subnode under a Boundary System to control the orientation.
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If the Symmetry plane check box is cleared, the first local axis defining the section forces is the same the first in-plane direction of the selected coordinate system.
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If the Symmetry plane check box is selected, only the normal orientation of the boundary system is used. The first local axis is taken as the inward normal from the symmetry plane into the structure.
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You can add plots showing the computed section forces from the Add Predefined Plots window.
If the annotation box with the numerical values obscures the arrows, you can just disable the Annotation node in the corresponding plot group.
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Updating a Solution in the COMSOL Multiphysics Reference Manual.
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