Hi all,
I have some
problems with understanding correctly the stress (e.g. Cauchy stress)
calculated by Abaqus. The boundary value problem consists of a square
where the top side is displaced up by 20% of its original height while
the bottom side is fixed. Now when I use a quadrilateral mesh the
result is clear. But what happens when a triangular mesh is used? Why
some triangles have a negative stress? In the figures the S11
component of the Cauchy stress tensor is plotted.
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