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FAQ 001079 | What is the effect of contact stresses σ-z at curved surfaces?
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QuestionWhat is the effect of contact stresses σz at curved surfaces?
The contact stresses σz on rotational surfaces act in the direction of the local z-axis of the surface.
Each FE element has its own local coordinate system, which corresponds to the local coordinate system of the surface. If the local z-axis of the surface shows outwards, then it does this at all FE elements and thus along the entire surface.
The direction of acting at curved surfaces can be controlled in the graphic, when selecting the "FE Mesh → On Surfaces → FE Axis Systems x,y,z" option in the Display navigator.
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